Mahesh

Practice the AP 10th Class Physical Science Bits with Answers Chapter 6 Structure of Atom on a regular basis so that you can attempt exams with utmost confidence.

AP State Syllabus 10th Class Physical Science Bits 6th Lesson Structure of Atom with Answers

CONCEPT -I: Electromagnetic ctrum

Question 1.
Match the following:
a) Electron — ii) Negatively charged particle
c) Neutron — iii) Neutral particle
A) a → i, b → ii, c → iii
B) c → i, b → ii, a → iii
C) a → ii, b → i, c → iii
D) a → ii, b → iii, c → i
Answer:
C) a → ii, b → i, c → iii

Question 2.
The sub atomic particles present in an atom……………
i) electron
ii) proton
iii) neutron
A) only i
B) only ii
C) both i and ii
D) all of these
Answer:
D) all of these

Question 3.
The number of colours in rainbow
A) 3
B) 5
C) 7
D) 9
Answer:
C) 7

Question 4.
A vibrating charge produces ………………..
A) MechMhical wave
B) Stationary wave
C) Longitudinal wave
D) Electromagnetic wave
Answer:
D) Electromagnetic wave

Question 5.
Electromagnetic wave travels with a speed of …………….
A) 3 x 10⁷ m/s
B) 3 x 10⁶ m/s
C) 3 x 10⁸ m/s
D) 3 x 10⁹ m/s
Answer:
C) 3 x 10⁸ m/s

Question 6.
Electromagnetic energy is charecterized by………………
i) wavelength
ii) amplitude
iii) frequency
A) only i
B) only ii
C) both i and iii
D) all of these
Answer:
C) both i and iii

Question 7.
The distance between two successive peaks of a wave is …………….
A) Amplitude
B) Frequency
C) Wavelength
D) Speed
Answer:
C) Wavelength

Question 8.
The relation between frequency and wavelength of electromagnetic wave
A) λ ∝ υ
B) λ = υ
C) λ ∝ 1/υ
D) none of these
Answer:
C) λ ∝ 1/υ

Question 9.
Formation of rainbow is example of …………….. spectrum.
A) UV
B) IR
C) RADIO
D) Visible
Answer:
D) Visible

Question 10.
V = υλ, is applicable for……………..
A) longitudinal waves
B) transverse waves
C) electromagnetic waves
D) all
Answer:
D) all

Question 11.
Red has …………………. wavelength and …………………. frequency.
A) maximum, maximum
B) minimum, maximum
C) maximum, minimum
D) minimum, minimum
Answer:
C) maximum, minimum

Question 12.
Quantum theory was proposed by……………….
A) Einsteiry
B) Maxwell
C) Max Planck
D) Newton
Answer:
C) Max Planck

Question 13.
Planck’s equation is …………..
A) E = hυ
B) E = h/υ
C) E = υ/h
D) None of these
Answer:
A) E = hυ

Question 14.
Which of the following are correct statements:
P: E = ko is called Planck’s equation
Q: ‘h’ is called Planck’s constant
R: ‘h’ value is 6.626 x 10^-34J
S: According to Planck electro-magnetic energy is always emitted in multiples of h/υ
A) onlyP
B) PandQ
C) P, Q and R
D) All of these
Answer:
C) P, Q and R

Question 15.
When an iron rod is heated first it turns to
A) violet
B) red
C) green
D) orange
Answer:
B) red

Question 16.
Cupric chloride produces ………….. colour flame.
A) red
B) green
C) blue
D) orange
Answer:
B) green

Question 17.
Strontium chloride produces……………… colour flame.
A) red
B) green
C) blue
D) orange
Answer:
A) red

Question 18.
…………….. vapours produce yellow light in street lamps.
A) Potassium
B) Sodium
C) Calcium
D) Magnesium
Answer:
B) Sodium

Question 19.
Elements emit characteristic colours correspond to certain discrete wave¬lengths of light are called ……………..
A) bond spectra
B) absorption spectra
C) line spectra
D) both A and B
Answer:
C) line spectra

Question 20.
Line spectra is formed by ………………
A) atoms
B) molecules
C) ions
D) protons
Answer:
A) atoms

Question 21.
From the figure, the wavelength of Cosmic rays is………

A) 10^-3 m
B) 10^-9 m
C) 10³ m
D) 10^-12 m
Answer:
D) 10^-12 m

Question 22.
The wavelength range of. visible spectrum is……….
A) <400 nm B) >700 nm
C) 400 nm – 700 nm
D) 1mm-lm
Answer:
C) 400 nm – 700 nm

Question 23.
In this figure magnetic field and electric field are………. each other.

A) parallel to
B) perpendicular to
C) intersect
D) None of these
Answer:
B) perpendicular to

Question 24.
From the figure match the following:
a) X-rays — i) 700nm-1000nm
b) IRrays — ii) lm to 1 km
c) Radio rays — iii) Above 1 km
d) Broadcast — iv) 0.01 to 10 nm bond
A) a → iv, b → i, c → ii, d → iii
B) a →i, b → ii, c → iii, d → iv
C) a → iv, b → iii, c → ii, d → n
D) a → iii, b → iv, c →i, d → ii
Answer:
A) a → iv, b → i, c → ii, d → iii

Question 25.
…………. are used in Radar.
A) UVrays
B) IRrays
C) Microwaves
D) X-rays
Answer:
C) Microwaves

Question 26.
An emission spectrum consists of , bright spectral lines on a dark back ground. Which one of the following does not correspond to the bright j spectral lines ?
A) Frequency of emitted radiation
B) Wavelength of emitted radiation
C) Energy of emitted radiation
D) Velocity of light
Answer:
D) Velocity of light

Question 27.
The colour in the sequence VIBGYOR that has least wavelength is …………….
A) yellow
B) red
C) green
D) violet
Answer:
D) violet

Question 28.
Which electromagnetic waves are sensitive to our eyes ?
A) X – rays
B) Ultraviolet rays
C) Visible rays
D) Microwaves
Answer:
C) Visible rays

Question 29.
Rainbow is a …………….. spectrum.
A) continuous
B) discontinuous
C) visible
D) both A and C
Answer:
D) both A and C

CONCEPT – II :Atomic model Bohr’s model & Sommer feld’s model

Question 30.
Stationary orbits are proposed by
A) Rutherford
B) Thomson
C) Newton
D) Neils Bohr
Answer:
D) Neils Bohr

Question 31.
The energies of an electron in an orbit of atom can have only certain values. These orbits are called……………..
i) stationary orbits
ii) stationary states
iii) energy level,
A) only i
B) only ii
C) only iii
D) all of these
Answer:
D) all of these

Question 32.
The energy is quantized means ………………
A) Energy is fixed
B) Energy would increase
C) Energy would decrease
D) None of these
Answer:
A) Energy is fixed

Question 33.
Lowest energy state of an electron is known as ……..
A) excited states
B) ground state
C) fixed state
D) rest state
Answer:
B) ground state

Question 34.
Higher energy state of an electron is known as ………..
A) ground state
B) excited state
C) neutral state
D) fixed state
Answer:
B) excited state

Question 35.
The spectrum formed due to excited electron come back to ground state is ………………….
i) absorption spectrum
ii) emission spectrum
iii) fine spectrum
A) only i
B) only ii
C) both i and ii
D) all
Answer:
B) only ii

Question 36.
When electron absorbs energy from surroundings and moves to excited state the spectrum formed is ……………..
A) Emission spectrum
B) Absorption spectrum
C) Fine spectrum
D) Continuous spectrum
Answer:
B) Absorption spectrum

Question 37.
In the following statements which is not correct for Bohr’s model
A) It explains the spectrum of hydrogen
B) It unable to explain spectra of elements having more than one electron
C) It explains fine spectrum of hydrogen atom
D) Unable to explain Zeeman effect
Answer:
C) It explains fine spectrum of hydrogen atom

Question 38.
Elliptical orbits were introduced by ……………..
A) Neils Bohr
B) Sommerfeld
C) Planck
D) Maxwell
Answer:
B) Sommerfeld

Question 39.
The number of elliptical orbits present in Bohr’s third orbit
A) 1
B) 2
C) 3
D) 4
Answer:
B) 2

Question 40.
Quantum mechanical model was proposed by ………………..
A) Neils Bohr
B) Sommerfeld
C) Erwin Schrodinger
D) Lande
Answer:
C) Erwin Schrodinger

Question 41.
If n = 4 then the orbit is represented as ………………….
A) K
B) L
C) M
D) N
Answer:
D) N

Question 42.
The maximum number of electrons that can be occupied in a given shell is………………
A) n²
B) n
C) 2n
D) 2n²
Answer:
D) 2n²

Question 43.
The maximum number of electrons that can be accommodated in the L- shell of an atom is …………………
A) 2
B) 8
C) 18
D) 32
Answer:
B) 8

Question 44.
Maximum number of electrons M shell contain is …………………
A) 2
B) 8
C) 18
D) 32
Answer:
C) 18

Question 45.
Match the following:
a) n = 1 — i) L
b) n = 2 — ii) N
c) n = 3 — iii) K
d) n = 4 — iv) M
A) a → i, b → ii, c → iii, d → iv
B) a → iii, b→ i, c → iv, d → ii
C) a → iv, b → iii, c → ii, d→i
D) a → ii, b→ i, c → iii, d → iv
Answer:
B) a → iii, b→ i, c → iv, d → ii

Question 46.
Bohr’s model explain the line spectra of ………
A) H⁺ ion
B) Hatom
C) He atom
D) Li⁺ ion
Answer:
D) Li⁺ ion

Question 47.
If an element has 3 electrons in the M-shell then the element is …………………
A) Mg
B) Al
C) Si
D) Na
Answer:
B) Al

Question 48.
If number of electrons in M-shell is half of K-shell then atomic number and name of element.
A) 12, Magnesium
B) 11, Sodium
C) 13, Aluminium
D) 14, Silicon
Answer:
B) 11, Sodium

Question 49.
When an electron jumps from higher orbit to lower orbit in an atom the energy is …………….
A) absorbed
B) emitted
C) not changed
D) depends on atom
Answer:
B) emitted

CONCEPT – III: Quantum

Question 50.
The region of space around the nucleus where the probability of finding electron is maximum is called…………..
A) orbit
B) sub orbit
C) orbital
D) none of these
Answer:
C) orbital

Question 51.
The information given by principal quantum number……………….
i) size of the orbit
ii) energy of the orbit
iii) orientation of orbitals in space
iv) spin of electrons
A) only i
B) both i and ii
C) i, ii and iii
D) all of these
Answer:
B) both i and ii

Question 52.
For’n’the minimum value is . and the maximum value is….
A) 1, ∝
B) 0, n-1
C) -n, +n
D) 0, n+1
Answer:
A) 1, ∝

Question 53.
The quantum number which explains about size and energy of the orbit or shell is ……………
A) n
B) l
C) m_l
D) m_s
Answer:
A) n

Question 54.
For l the minimum value is ……………… and the maximum value is
A) 0, l
B) 0,n-1
C) -l, +l
D) -n, n
Answer:
B) 0,n-1

Question 55.
Match the following:
a) l = 0 — i) d – sub shell
b) 1 = 1 — ii) s – sub shell
c) 7 = 2 — iii) f – sub shell
d) 7 = 3 — iv) p – sub shell
A) a → i, b → ii, c → iii, d → iv
B) a → iv, b → mi, c → ii, d → i
C) a → ii, b → iv, c → i, d → iii
D) a → iii, b → i, c → iv, d → ii
Answer:
C) a → ii, b → iv, c → i, d → iii

Question 56.
For ml the minimum value is ………….. and the maximum value is………….
A) 0, n
B) 0, n-1
C) [latex]-\frac{1}{2},+\frac{1}{2}[/latex]
D) -l , +l
Answer:
D) -l , +l

Question 57.
If l = 1 for an atom then the number of orbitals in its sub shell:
A) 1
B) 2
C) 3
D) 0
Answer:
C) 3

Question 58.
Number of orbitals in a sub shell is given by the formula
A) 2n²
B) n²
C) l + l
D) 2l + 1
Answer:
D) 2l + 1

Question 59.
Match the following:
Sub shell — Number of degenerate orbitals
a) s — i) 7
b) p — ii) 1
c) d — iii) 3
d) f — iv) 5

A) a→i, b→ii, c→iii, d→iv
B) a→iv, b→iii, c→ii, d→h
C) a—ii, b→iii, c→iv, d→i
D) a→iv, b→ii, o→iii, d→i
Answer:
C) a—ii, b→iii, c→iv, d→i

Question 60.
Match the following:
a) s – orbital — i) dumbell ,
b) p – orbital — ii) spherical
c) d – orbital — iii) double dumbell
A) a→i, b→ii, c→iii
B) a→iii, b→ii, c→h
C) a→ii, b→i, c→iii
D) a→ii, b→iii, c→i
Answer:
C) a→ii, b→i, c→iii

Question 61.
Statement I: Fdi p sub shell the m_l values are-1,0,1
Statement II: For d sub shell the m_l values are -2, -1,0,1, 2
A) Both statements are correct
B) Statement I is correct and II is incorrect
C) Statement I is. incorrect and II is correct
D) Both statements are incorrect
Answer:
A) Both statements are correct

Question 62.
a) s – sub shell i) Maximum number of electrons is 6
b) p – sub shell ii) Maximum number of electrons is 14
c) d – sub shell iii) Maximum number of electrons is 2
d) f – sub shell iv) Maximum number of electrons is 10
A) a→i, b→ii, c→iii, d→iv
B) a→iv, b→iii, c→ii, d→i
C) a→iii, b→i, c→iv, d→ii
D) a→iv, b→i, c→ii, d→iii
Answer:
C) a→iii, b→i, c→iv, d→ii

Question 63.
Find the odd one.
A) Principal quantum number – n
B) Angular momentum quantum number – l
C) Magnetic quantum number – m_l
D) Spin quantum number – k
Answer:
D) Spin quantum number – k

Question 64.
The value of in m_s for an electron spinning in clockwise direction is ………….. and for anti clockwise direction is …………..
A) [latex]-\frac{1}{2},+\frac{1}{2}[/latex]
B) [latex]+\frac{1}{2},-\frac{1}{2}[/latex]
C) 1,-1
D) -1,1
Answer:
B) [latex]+\frac{1}{2},-\frac{1}{2}[/latex]

Question 65.
The clockwise spin in an orbital is represented by …………..
A) →
B) ←
C) ↑
D) ↓
Answer:
C) ↑

Question 66.
Anti clockwise spin of electron is represented by ……………
A) ↑
B) →
C) ←
D) ↓
Answer:
D) ↓

Question 67.
If two electrons have positive spin values,, then their spins are …………………..
A) perpendicular
B) intersected
C) parallel
D) anti parallel
Answer:
C) parallel

Question 68.
If two electrons have positive and negative spin values then their spins are ………………..
A) parallel
B) anti parallel
C) perpendicular
D) intersected
Answer:
B) anti parallel

Question 69.
During writing electronic configuration the electrons are distributed into
A) shells
B) sub shells
C) orbitals
D) all of these
Answer:
D) all of these

Question 70.
“No two electrons of same atom have same set of four quantum numbers”. This principle is known as ……………..
A) Hund’s principle
B) Aufbau principle
C) Pauli’s exclusion principle
D) Heisenberg uncertainty principle
Answer:
C) Pauli’s exclusion principle

Question 71.
Orbitals are filled with electrons in the order of increasing energy is given by ………….. principle.
A) Hund
B) Aufbau
C) Pauli’s exclusion
D) Heisenberg
Answer:
B) Aufbau

Question 72.
……………… means building up.
A) Quanta
B) Photon
C) Aufbau
D) Orbital
Answer:
C) Aufbau

Question 73.
Which of the following orbital has greater n + l value ?
A) 4p
B) 5s
C) 3d
D) 4f
Answer:
D) 4f

Question 74.
The n + l value of 3d orbital is ………………
A) 3
B) 4
C) 5
D) 6
Answer:
C) 5

Question 75.
The filling order of atomic orbitals is given by.
A) Bohr
B) Sommerfeld
C) Pauli
D) Moeller
Answer:
D) Moeller

Question 76.
The rule violated in this electron configuration is 1s², 2s°, 2p³
A) Pauli’s exclusion principle
B) Hund’s rule
C) Aufbau principle
D) Heisenberg uncertainty principle
Answer:
C) Aufbau principle

Question 77.
The rule violated in the following electronic configuration is………….

A) Pauli’s exclusion principle
B) Hund’s rule
C) Aufbau principle
D) Heisenburg uncertainty principle
Answer:
B) Hund’s rule

Question 78.
The principle is violated in the given information about Helium atom.

A) Pauli’s exclusion principle
B) Hund’s rule
C) Aufbau principle
D) Heisenberg uncertainty principle
Answer:
A) Pauli’s exclusion principle

Question 79.
According to Pauli’s exclusion principle the maximum number of electrons filled in an orbital is ………………
A) 1
B) 2
C) 3
D) 4
Answer:
B) 2

Question 80.
The valence electron configuration of electron for the following quantum numbers.

A) 4s¹
B) 4s²
C) 4p²
D) 4p²
Answer:
B) 4s²

Question 81.
The valance electron configuration of electron for following quantum numbers.

A) 3d⁵
B) 3d⁶
C) 3d⁷
D) 3d¹⁰
Answer:
D) 3d¹⁰

Question 82.
The following orbitals have n+l value 6
i) 5p
ii) 6s
iii) 4d
iv) 4f
A) only i
B) both i and ii
C) i, ii and iii
D) all of these
Answer:
C) i, ii and iii

Question 83.
What are set of quantum numbers for electron configuration of element is 3d⁷?
A) n = 3, l = 2, m_l = -1, m_s = -1/2
B) n = 3, l =2, m_l = -2, m_s = -1/2
C) n = 3, l =2, m_l= -1, m_s = +1/2
D) n = 3, l = 2, m_l= -2, m_s = +1/2
Answer:
A) n = 3, l = 2, m_l = -1, m_s = -1/2

Question 84.
The quantum number which says about size and energy of orbit is
A) n
B) l
C) m_l
D) m_s
Answer:
A) n

Question 85.
Match the following:
a) Principal quantum number (n) — i) Orientation of orbital in space
b) Angular momentum quantum number (l) — Size and energy of orbit
c) Magnetic quantum number (m_l) — iii) Shape of sub shell
d) Spin quantum number (m_s )– Spin of electron
A) a→i, b→ii, c→iii, d→iv
B) a→ii, b→iii, c→i, d→iv
C) a→iv, b→iii, c→ii, d→i
D) a→iv, b→ii, c→iii, d→i
Answer:
B) a→ii, b→iii, c→i, d→iv

Question 86.
If n = 3 and Z = 2 the energy level is represented as
A) 3s
B) 3p
C) 3d
D) 3f
Answer:
C) 3d

Question 87.
To which boundary surface diagram of d – orbital does indicate ?
A) d_xy
B) d_yz
C) d_z2
D) d_x²-y²

Answer:
D) d_x²-y²

Question 88.
The number of possible orbitals in a sub shell with angular momentum quantum number (1) is
A) l +1
B) 2l + 1
C) 2 (21 + 1)
D) 0 ton-1
Answer:
B) 2l + 1

Question 89.
The maximum number of electrons in n = 3 main energy level is ………………….
A) 8
B) 16
C) 18
D) 32
Answer:
C) 18

Question 90.
Which of the following quantum number describes the orientation of orbital in space around the nucleus of atom?
A) Magnetic quantum number
B) Spin quantum number
C) Angular momentum quantum number
D) Principal quantum number
Answer:
A) Magnetic quantum number

Question 91.
The correct electron configuration of Copper is……….
A) [Ar] 4s² 3d¹⁰
B) [Ar] 4s² 3d⁹
C) [Ar] 4s¹ 3d⁵
D) [Ar] 4s¹ 3d¹⁰
Answer:
D) [Ar] 4s¹ 3d¹⁰

Question 92.
The correct electron configuration of Chromium is………..
A) [Ar] 4s¹ 3d⁵
B) [Ar] 4s² 3d⁵
C) [Ar] 4s¹ 3d¹⁰
D) [Ar] 4s² 3d¹⁰
Answer:
A) [Ar] 4s¹ 3d⁵

Question 93.
The rule violated in electron configurations of Chromium and Copper is ………….
A) Aufbau
B) Hund
C) Pauli’s exclusion
D) Heisenberg uncertainty
Answer:
A) Aufbau

Question 94.
Atoms having these orbitals are stable
A) half filled
B) completely filled
C) both A and B
D) none of these
Answer:
C) both A and B

Question 95.
The maximum number of electrons accommodated in a sub shell with Azimuthal quantum number (angular momentum quantum number) l is ………………….
A) 2l + 1
B) 4l + 2
C) l(l+1)
D) 4l – 1
Answer:
B) 4l + 2

Question 96.
The four quantum numbers for valance electron of Sodium atom are ………………
A) n = 1, l = 0, m_l= 0, m_s = +1/2
B) n = 2, l = 0, m_l= 0, m_s = +1/2
C) n = 3, l = 0, m_l= 0, m_s = +1/2
D) n = 3, l = 1, m_l= 0, m_s= +1/2
Answer:
C) n = 3, l = 0, m_l= 0, m_s = +1/2

Question 97.
Degenerate orbitals have
A) same l value and same n value
B) different l value and same n value
C) same l value and different n value
D) same n+l value
Answer:
A) same l value and same n value

Question 98.
When l = 3 the maximum number of electrons that can occupy in the corresponding sub shell is ……………
A) 2
B) 6
C) 10
D) 14
Answer:
D) 14

Question 99.
The number of orbitals present in a given shell is …………
A) n
B) n²
C) 2n²
D) 2l + 1
Answer:
B) n²

Question 100.
The orbital that is having least energy among 3p, 4s, 3d, 4p is ……………………..
A) 3p
B) 4s
C) 3d
D) 4p
Answer:
A) 3p

Question 101.
Which of the following is the correct configuration of O^2- …………….
A) 1s² 2s² 2p⁴
B) 1s² 2s² 2p⁶
C) 1s² 2s² 2p²
D) 1s² 2s² 2p⁵
Answer:
B) 1s² 2s² 2p⁶

Question 102.
The impossible set of quantum numbers for any electron of an atom is ……………………
a) n = 1, l = 1, m_l = 0, m_s = +1/2
b) n = 2, l =2, m_l = 1, m_s = -1/2
c) n = 3, l = 2, m_l = 1, m_s = +1/2
d) n = 3, l = 0, m_l = 0, m_s = -1/2
A) a only
B) a, b only
C) c, d only
D) d only
Answer:
B) a, b only

Question 103.
The orbitalwhich does not lie along the axis is………………
A) P_x
B) d_{² – y²}
C) d_xy
D) p_y
Answer:
C) d_xy

Question 104.
Which one of the following has the electronic configuration of 1s² 2s² 2p⁶?
A) Ne
B) Na⁺
C) F^–
D) All
Answer:
D) All

Question 105.
Magnetic quantum number of the last electron of Sodium is ………………….
A) 3
B) 2
C) 1
D) 0
Answer:
D) 0

Question 106.
The following is shape of …………… orbital.
A) s
B) p
C) d
D) f

Answer:
A) s

Practice the AP 10th Class Physical Science Bits with Answers Chapter 7 Classification of Elements- The Periodic Table on a regular basis so that you can attempt exams with utmost confidence.

AP State Syllabus 10th Class Physical Science Bits 7th Lesson Classification of Elements- The Periodic Table with Answers

Question 1.
Number of elements discovered to till date.
A) 24
B) 63
C) 90
D) more than 115
Answer:
D) more than 115

Question 2.
……………. defined an element as any substance that cannot be decomposed into further simple substance by physical or chemical change.
A) Charles
B) Robert Boyle
C) Avagadro
D) Madam Curie
Answer:
B) Robert Boyle

Question 3.
Lithium, …………………… and Potassium constitute a Dobereiner triad
A) Magnesium
B) Calcium
C) Sodium
D) Rubidium
Answer:
C) Sodium

Question 4.
Louis Proust stated that……………….. atom is the building material.
A) Oxygen
B) Hydrogen
C) Chlorine
D) Nitrogen
Answer:
B) Hydrogen

Question 5.
Group of three elements with similar chemical properties is called …………….
A) diad
B) triad
C) tetrad
D) pentad
Answer:
B) triad

Question 6.
Dobereiner triad is based on
A) Atomic number
B) Atomic weight
C) Atomic volume
D) Atomic size
Answer:
B) Atomic weight

Question 7.
According to this every 8th element has similar properties starting from a, given element
A) Dobereiner triad
B) Newlands’ law
C) Mendeleeff’s periodic table
D) Modem periodic table
Answer:
B) Newlands’ law

Question 8.
Newlands’ periodic table was restricted to …………….. elements.
A) 40
B) 56
C) 60
D) 80
Answer:
B) 56

Question 9.
Dobereiner triad failed for …………………..
i) low mass
ii) equal mass
iv) neutral mass
A) Only i
B) both i and iii
C) both i and iv
D) all
Answer:
B) both i and iii

Question 10.
The number of periods and groups in Mendeleeff’s periodic table is
A) 7,8
B) 7,18
C) 10,18
D) 7,12
Answer:
A) 7,8

Question 11.
Mendeleeff’s periodic table is based on
A) atomic number
B) atomic weight
C) atomic volume
D) atomic size
Answer:
B) atomic weight

Question 12.
Match the following
a) eka boron — i) gallium
b) eka aluminium — ii) germanium
c) eka silicon — iii) scandium
A) a – i, b – ii, c – iii
B) a – iii, b – i, c – ii
C) a – iii, b – ii, c – i
D) a – i, b – iii, c – ii
Answer:
B) a – iii, b – i, c – ii

Question 13.
Atomic weight = ……………….. x equivalent weight
A) atomic number
B) combining capacity
C) valency
D) both B and C
Answer:
C) valency

Question 14.
Mendeleeff corrected atomic weights of
i) Beryllium
ii) Indium
iii) Gold
A) only i
B) only ii
C) both i and ii
D) all of these
Answer:
D) all of these

Question 15.
Element with atomic number 101 is
A) Barium
B) Fermium
C) Mendelevium
D) Einsteinium
Answer:
C) Mendelevium

Question 16.
Example for anomalous pair
A) Tellurium, Iodine
B) Cobalt, Nickel
C) Argon, Potassium
D) All of these
Answer:
D) All of these

Question 17.
The number of positive charges (protons) in the atom of an element is called………………
A) Atomic number
B) Mass number
C) Atomic weight
D) Atomic volume
Answer:
A) Atomic number

Question 18.
The atomic weight of a bivalent element is 9. The equivalent weight of same element is
A) 18
B) 13.5
C) 4.5
D) 3
Answer:
C) 4.5

Question 19.
Which pair of elements fits into same slot in Newlands’ table of elements ?
A) F, Cl
B) Co, Ni
C) Mg, Ca
D) C, Si
Answer:
B) Co, Ni

Question 20.
Law of octaves was proposed by
A) Dobereiner
B) Newlands
C) Neils Bohr
D) Mendeleeff
Answer:
B) Newlands

Question 21.
The predicted properties of elements Eka boron, Eka aluminium and eka silicon were close to the observed properties of the following elements respectively.
A) scandium, gallium, germanium
B) gallium, germanium, scandium
C) gallium, scandium, germanium
D) germanium, gallium, scandium
Answer:
A) scandium, gallium, germanium

Question 22.
The abnormal pair of elements in the following is
A) H and He
B) NeandAr
C) KrandK
D) K and Ar
Answer:
D) K and Ar

Question 23.
The set of elements that is not Dobereiner triad from the following
A) Ca, Sr, Ba
B) Cl ,Br, I
C) Mn, Cr, Fe
D) S, Si, Te
Answer:
D) S, Si, Te

Question 24.
Mendeleeff’s eka aluminium is
A) scandium
B) gallium
C) germanium
D) indium
Answer:
B) gallium

Question 25.
A Dobereiner triad in the following is
A) Cl, Br, I
B) H, He, Li
C) H, Na, Cl
D) C,N, O
Answer:
Answer:
A) Cl, Br, I

CONCEPT – 2 : Modern Periodic Table

Question 26.
……………….. found that each element emits a characteristic pattern of X ^ rays when subjected to bombardment by high energy electrons.
A) Bohr
B) Sommerfeld
C) Mendeleeff
D) Mosley
Answer:
D) Mosley

Question 27.
Modem periodic table is based on
A) atomic number
B) electron negativity
C) Both A and B
D) None of these
Answer:
A) atomic number

Question 28.
The number of periods and groups in modern periodic table ………………..
A) 7, 8
B) 7,18
C) 6,7
D) 5,6
Answer:
B) 7,18

Question 29.
Match the following
i) Sodium — a) p – block
ii) Aluminium — f -block
iii) Scandium — s – block
iv) Cerium — d) d-block
A) i → a, ii → b, iii → c, iv → d
B) i → a, ii → d, iii → b, iv →c
C) i → c, ii → a, iii → d, iv → b
D) i → d, ii → c,i ii → b, iv → a
Answer:
C) i → c, ii → a, iii → d, iv → b

Question 30.
Match the following

A) a → ii, b → i, c → iii, d → iv
B) a → iv, b →ii, c → i, d →iii
C) a → iv, b → iii, c → ii, d → i
D) a → iv, b → ii, c → iii, d → i
Answer:
B) a → iv, b →ii, c → i, d →iii

Question 31.
Match the following
a) Alkali metals i) VIA or 16
b) Alkaline earthmetals — i) I A or 1
c) Chalcogens — iii) VIIA or 17
d) Halogens — iv) II A or 2
A) a → i, b → ii, c iii, d →iv
B) a → iv, b → iii, c → ii, d → i
C) a → ii, b →iv, c → i, d → iii
D) a →iv, b → ii, c → iii, d → i
Answer:
C) a → ii, b →iv, c → i, d → iii

Question 32.
These are noble gases.
i) He
ii) Ne
iii) Ar
iv) Kr
A) i only
B) ii only
C) ii and iii
D) All of these
Answer:
D) All of these

Question 33.
…………….. elements are called Lanthanides.
A) 2f
B) 3f
C) 4f
D) 5f
Answer:
C) 4f

Question 34.
Lanthanides having atomic numbers from ……………… to ………………
A) 58, 71
B) 90,103
C) 60, 80
D) 90,110
Answer:
A) 58, 71

Question 35.
5 f elements are called ………………..
A) representative elements
B) transition elements
C) lanthanides
D) actinides
Answer:
D) actinides

Question 36.
Noble gases belong to ……………… group of periodic table.
A) IA
B) IIA
C) VIIA
D) VIIIA
Answer:
D) VIIIA

Question 37.
The elements present in 2nd period of long form of periodic table :
A) 2
B) 8
C) 18
D) 32
Answer:
B) 8

Question 38.
……………….. period of periodic table is incomplete.
A) 1st
B) 2nd
C) 6th
D) 7th
Answer:
D) 7th

Question 39.
The number of elements present in 6th period is ………………
A) 2
B) 8
C) 18
D) 32
Answer:
D) 32

Question 40.
Match the following
a) Shortest period — i) 7
b) Longest period — ii) 1
c) Incomplete period — iii) 5
d) Period having 18 elements — iv) 6
A) a → i, b → ii, c → iii, d →iv
B) a → iv, b →iii, c → ii, d → i
C) a →ii, b → iv, c → i, d → iii
D) a → iv, b → i, c → ii, d → iii
Answer:
C) a →ii, b → iv, c → i, d → iii

Question 41.
Nitrogen is the element of group-VA of the periodic table. Which of the following is the atomic number of the next element in the group?
A) 9
B) 14
C) 15
D) 17
Answer:
C) 15

Question 42.
Electron configuration of an atom is 2, 8, 7. Which of the following elements would it be chemically similar ?
A) Nitrogen (Z = 7)
B) Fluorine (Z = 9)
C) Phosphorous (Z = 15 )
D) Argon (Z = 18)
Answer:
B) Fluorine (Z = 9)

Question 43.
‘s’, ‘p’ block elements are collectively called as
A) Transition elements
B) Inner transition elements
C) Representative elements
D) Noble gases
Answer:
C) Representative elements

Question 44.
Statement I : d – block elements are called transition elements.
Statement II : f – block elements are called inner transition elements.
A) Both statements are true
B) Statement I is true and II is false
C) Statement I is false and II is true
D) Both statements are false
Answer:
A) Both statements are true

Question 45.
Inner transition elements belong to ………………
A) III B
B) IV B
C) V B
D) VI B
Answer:
A) III B

Question 46.
The element which is not metal in s – block is ………………..
A) Hydrogen
B) Chlorine
C) Sodium
D) Magnesium
Answer:
A) Hydrogen

Question 47.
Match the following.
a) valence of group IA — i) 4
b) valence of group IVA — ii) 0
c) valence of group VIA — iii) 1
d) valence of group VIIIA — iv) 2
A) a → i, b → ii, c → iii, d → iv
B) a → iv, b → iii, c → ii, d → i
C) a → iv, b → i, c → ii, d →iii
D) a → iii, b → i, c → iv, d → ii
Answer:
D) a → iii, b → i, c → iv, d → ii

Question 48.
Modern periodic law states that the properties of elements are periodic functions of their
A) atomic weight
B) atomic number
C) electron configuration
D) both B and C
Answer:
D) both B and C

Question 49.
Which of the following is the p block element ?
A) Ti
B) Ce
C) Ga
D) K
Answer:
C) Ga

Question 50.
How many s – block and p block elements are there in the third period of the periodic table ?
A) 2, 8
B) 8, 2
C) 4,4
D) 2, 6
Answer:
D) 2, 6

Question 51.
Metalloids are
A) s – block elements
B) d – block elements
C) f – block elements
D) p – block elements
Answer:
D) p – block elements

Question 52.
The ionization energy in the periodic table
A) decreases going down the group
B) increases going down the group
C) decreases from left to right in the period
D) remains same going down the group
Answer:
B) increases going down the group

Question 53.
As per modern periodic law, the properties of the elements are periodic functions of their
A) atomic weights
B) mass numbers
C) atomic numbers
D) valencies
Answer:
C) atomic numbers

Question 54.
Elements of which group are called halogens?
A) VA
B) VIA
C) VII A
D) IV A
Answer:
C) VII A

Question 55.
Which of the following elements belongs to d block ?
A) Cl
B) Cr
C) Sr
D) Ar
Answer:
B) Cr

Question 56.
The longest period in the modern periodic table is
A) 7th
B) 6th
C) 5th
D) 4th
Answer:
B) 6th

Question 57.
The valency of an element which belongs to 3rd period and 2nd group of periodic table is
A) 2
B) 3
C) 4
D) 5
Answer:
A) 2

Question 58.
The general electron configuration of inert gases
A) ns²
B) ns²np¹
C) ns²np²
D) ns²np⁶
Answer:
D) ns²np⁶

Question 59.
The elements a, b, c, d have the following electron configurations. Then the elements that belong to the same group of periodic table is
a) 2,3
b) 2,8,3
c) 2,8,5
d) 2,8,7
A) a, b
B) b, c
C) c, d
D) d, a
Answer:
A) a, b

Question 60.
The inert gas element which does not have octet configuration in the outer
most orbit is
A) Ar
B) Kr
C) Rn
D) He
Answer:
D) He

Question 61.
The element belongs to 3rd period and 17th group is
A) F
B) Cl
C) Br
D) I
Answer:
B) Cl

Question 62.
The element with atomic number 13 belongs to ……………. period and …………….. group.
A) 3,13
B) 3, 2
C) 2, 3
D) 3,14
Answer:
A) 3,13

Question 63.
Where do Na and N belong ?
A) s-block
B) Na belongs to s – block and N belongs to d – block
C) p-block
D) Na belongs to s – block and N belongs to p – block
Answer:
D) Na belongs to s – block and N belongs to p – block

Question 64.
The atomic numbers of actinide series elements are
A) 58 to 71
B) 90 to 103
C) 92 to 105
D) 60 to 73
Answer:
B) 90 to 103

Question 65.
Which of the following group elements are known as chalcogens ?
A) 16
B) 6
C) 1
D) 17
Answer:
A) 16

Question 66.
The number of electrons that are present in Cl ion is
A) 6
B) 5
C) 11
D) 18
Answer:
D) 18

Question 67.
Which one of the following has the electronic configuration 1s² 2s² 2p⁶
A) Ne
B) Na⁺
C) F^–
D) All
Answer:
D) All

Question 68.
Potassium and calcium belong to
A) s – block elements
B) p – block elements
C) d – block elements
D) f – block elements
Answer:
A) s – block elements

Question 69.
Which of the following are lanthan ides?
A) K to Kr
B) Cs to Lu
C) CetoLu
D) ThtoLr
Answer:
B) Cs to Lu

Question 70.
The element with highest electro – negativity belongs to
A) 3rd period and 17th group
B) 2nd period and 17th group
C) 2nd period and 16th group
D) 2nd period and 18th group
Answer:
B) 2nd period and 17th group

Question 71.
The general electron configuration of s – block elements are
A) ns¹
B) ns²
C) ns¹ to ns²
D) none of these
Answer:
C) ns¹ to ns²

Question 72.
The general electron configuration of p – block elements are
A) ns¹
B) ns³²
C) ns2np1
D) ns² np¹ to ns² np⁶
Answer:
D) ns² np¹ to ns² np⁶

Question 73.
Cl belongs to …………… family.
A) Noble gases
B) Boron
C) Carbon
D) Halogen
Answer:
D) Halogen

Question 74.
Number of elements present in period 1 are
A) 2
B) 4
C) 6
D) 8
Answer:
A) 2

Question 75.
Which of the following element is electronegative?
A) Sodium
B) Oxygen
C) Magnesium
D) Calcium
Answer:
B) Oxygen

Question 76.
Number of vertical columns in the modern periodic table are
A) 7
B) 8
C) 10
D) 18
Answer:
D) 18

Question 77.
Choose the correct answer for the following matching.
Group A — Group B
1) Alkali metal — P) Calcium
2) Chalcogen — Q) Potassium
3) Alkaline earth metal — R) Sulphur
A) 1-Q,2-R, 3-P
B) 1-Q, 2-P, 3-R
C) 1-P, 2-0,3-R
D) 1 – P, 2 – R, 3 – Q
Answer:
A) 1-Q,2-R, 3-P

CONCEPT – 3 : Periodic Properties

Question 78.
The elements which have both metallic and non metallic properties are called
A) Metalloids
B) Semiconductors
C) Semi metals
D) Both A and C
Answer:
D) Both A and C

Question 79.
The examples for metalloids
A) Li, Na, K, Rb
B) Be, Mg, Ca, Sr, Ba
C) B, Si, As, Ge
D) F, Cl, Br, I
Answer:
C) B, Si, As, Ge

Question 80.
The distance from the centre of the nucleus of the atom to its outermost shell is
A) Atomic number
B) Atomic volume
C) Atomic radius
D) Atomic density
Answer:
C) Atomic radius

Question 81.
Atomic radius is measured in
A) m
B) mm
C) km
D) pm
Answer:
D) pm

Question 82.
1 pm = ……………. m
A) 10^-3
B) 10^-9
C) 10^-12
D) 10^-6
Answer:
C) 10^-12

Question 83.
The correct ascending order of atomic size for the following elements C, Li, N, Be :
A) C, Li, N, Be
B) Li, Be, C, N
C) C, N, Be, Li
D) Be, Li, N, C
Answer:
B) Li, Be, C, N

Question 84.
Which among these have greater size?
A) Na
B) Na⁺
C) Mg²⁺
D) Al³⁺
Answer:
A) Na

Question 85.
Which of the following has greater size?
A) F
B) F
C) Cl
D) Cl^–
Answer:
D) Cl^–

Question 86.
Statement I: Positive ion of an element has less size than its neutral atom.
Statement II : Negative ion of an element has bigger size than the neutral atom.
A) Both statements are true
B) Statement I is true and II is false
C) Statement I is false and II is true
D) Both are false
Answer:
A) Both statements are true

Question 87.
The energy required to remove an electron from the outermost orbit or shell of a neutral gaseous atom is
A) atomic size
B) ionization energy
C) electron gain enthalpy
D) oxidation potential
Answer:
B) ionization energy

Question 88.
Choose the correct order of ionization energies.
A) I₁ > I₂ > I₃
B) I₃ > I₂ > I₁
C) I₃ > I₁ > I₂
D) I₁= I₂ = I₃
Answer:
B) I₃ > I₂ > I₁

Question 89.
Which of the following statements is wrong ?
A) As screening effect increases ionization energy decreases
B) As atomic size increases ionization energy decreases
C) Ionization energy is expressed in KJ mol^-1
D) Nitrogen has less ionization energy compared to oxygen because it has stable half filled configuration.
Answer:
D) Nitrogen has less ionization energy compared to oxygen because it has stable half filled configuration.

Question 90.
The energy liberated when an electron is added to neutral gaseous atom is
A) ionization energy
B) electron affinity
C) electron gain enthalpy
D) both B and C
Answer:
D) both B and C

Question 91.
Alkaline earth metals have electron gain enthalpy values as
A) negative
B) positive
C) zero
D) all of these
Answer:
B) positive

Question 92.
Statement I: Electron affinity of atom is negative.
Statement II : Electron affinity of uninegative ion is positive.
A) Both statements are true
B) Statement I is true and II is false
C) Statement I is false and II is true
D) Both are false
Answer:
A) Both statements are true

Question 93.
The tendency of bonded atom to attract the electron pair towards itself is……………
A) electro positivity
B) electronegativity
C) electron affinity
D) ionization energy
Answer:
B) electronegativity

Question 94.
……………. proposed electronegativity of an element as average value of ionization energy and electron affinity.
A) Milliken
B) Pauling
C) Sommerfeld
D) Planck
Answer:
A) Milliken

Question 95.
……………….. assigned the electronegativity values for elements on the basis of bond energies.
A) Milliken
B) Pauling
C) Maxwell
D) Planck
Answer:
B) Pauling

Question 96.
The most electronegative element and its electronegativity value is
A) Cl, 4.0
B) F, 2.0
C) F, 4.0
D) Br, 4.0
Answer:
C) F, 4.0

Question 97.
The tendency of an atom to lose electrons is …………..
A) Metallic character
B) Electronegative character
C) Electropositive character
D) Both A and C
Answer:
D) Both A and C

Question 98.
The tendency of an atom to gain electrons is ……………..
A) Non-metallic character
B) Electropositive character
C) Metallic character
D) Both B and C
Answer:
A) Non-metallic character

Question 99.
The element at the bottom of a group would be expected to show ……………… metallic character than the element at the top
A) less
B) more
C) same
D) can’t say
Answer:
B) more

Question 100.
Which of the following is the most active metal ?
A) Lithium
B) Sodium
C) Potassium
D) Rubidium
Answer:
D) Rubidium

Question 101.
Which of the following ions is larger in size ?
A) Na⁺
B) Mg²⁺
C) Al³⁺
D) H⁺
Answer:
A) Na⁺

Question 102.
Correct ionization energy order in following set of elements is ………………
A) C > O > N
B) N > O > C
C) O > N > C
D) N > C > O
Answer:
B) N > O > C

Question 103.
The element with negative charge having the electronic configuration 2,8, 8 is
A) O^2-
B) O^–
C) S^2-
D) P^–
Answer:
C) S^2-

Question 104.
The pair of atomic numbers which belongs to the p-block elements is
A) 3,5
B) 11,12
C) 7,8
D) 12,13
Answer:
C) 7,8

Question 105.
Which one of the following decreases in a group from top to bottom ?
A) Atomic size
B) Metallic nature
C) Electropositivity
D) Electronegativity
Answer:
D) Electronegativity

Question 106.
The least electronegative element is
A) Cs
B) F
C) CZ
D) H
Answer:
A) Cs

Question 107.
Which of the following elements has larger atomic size ?
A) Na
B) Mg
C) Ca
D) K
Answer:
D) K

Question 108.
The correct order of electronegativity in the following elements is
A) F > Cl > O
B) F > O > Cl
C) O > F > Cl
D) Cl > F > O
Answer:
B) F > O > Cl

Question 109.
WZhich of the following elements has the highest electronegativity ?
A) CZ
B) F
C) Br
D) I
Answer:
B) F

Question 110.
As we go from left to right in a period the atomic number and atomic radius
A) both increase
B) both decrease
C) atomic number increases and atomic radius decreases
D) atomic number decreases and atomic radius increases
Answer:
C) atomic number increases and atomic radius decreases

Question 111.
Which of the following elements has more atomic radius
A) Be
B) Mg
C) Ca
D) Sr
Answer:
D) Sr

Question 112.
Which one of the following elements is electronegative ?
A) Na
B) O
C) Mg
D) Ca
Answer:
B) O

Question 113.
The biggest and smallest atoms from the following respectively are
A) N, Si
B) Si, N
C) C, N
D) N, P
Answer:
B) Si, N

Question 114.
The order of second ionization energy values of O and N is
A) O > N
B) N > O
C) 0 = N
D) IE₂ is lessthan IE₁
Answer:
B) N > O

Question 115.
Generally the order of electronegativity in group
A) decreases
B) increases
C) remains same
D) initially decreases then increases
Answer:
A) decreases

Question 116.
The correct order of atomic sizes of K, Ca, Na, Cl is
A) K > Ca > Na > CZ
B) K < Ca < Na < CZ C) Ca > K > CZ > Na
D) Na > CZ > K > Ca
Answer:
A) K > Ca > Na > CZ

Question 117.
Generally metallic character in period from left to right
A) increases
B) decreases
C) is equal for all elements
D) none
Answer:
B) decreases

Practice the AP 7th Class Social Bits with Answers Chapter 13 The Kings of Vijayanagara on a regular basis so that you can attempt exams with utmost confidence.

AP State Syllabus 7th Class Social Bits 13th Lesson The Kings of Vijayanagara with Answers

Choose the correct answer.

Question 1.
The city of Vijayanagara was located on the banks of the river
A) Krishna
B) the Godavari
C) Tungabhadra
D) Kaveri
Answer:
C) Tungabhadra

Question 2.
The kingdom of Vijayanagara was founded in the year
A) 1339 A.D
B) 1347 A.D
C) 1336 A.D
D) 1346 A.D
Answer:
C) 1336 A.D

Question 3.
The sage with whose blessings Hari Hara and Bukka founded the Vijayanagara kingdom was
A) Vidyananda
B) Ramanuja
C) Vidyaranya
D) Vijayaranya
Answer:
C) Vidyaranya

Question 4.
The name of the Lord worshipped by Vijayanagara kings was
A) Hazara Rama
B) Vithala
C) Virupaksha
D) Raghunatha
Answer:
C) Virupaksha

Question 5.
Which of the following is the correct chronological order of the dynasties that ruled the Vijayanagara kingdom?
A) Tuluva, Saluva, Sangama and Araviti
B) Sangama, Tuluva, Saluva and Araviti
C) Sangama, Saluva, Tuluva and Araviti
D) Araviti, Sangama, Saluva and Tuluva
Answer:
C) Sangama, Saluva, Tuluva and Araviti

Question 6.
The capital of the Bahmani kingdom was
A) Bijapur
B) Mysore
C) Golkonda
D) Gulbarga
Answer:
D) Gulbarga

Question 7.
The Sultans of Bahmani Kingdom originally belonged to
A) Prussia
B) Egypt
C) Turkey
D) Arabia and Iran
Answer:
D) Arabia and Iran

Question 8.
The traveller Nicolo Conti who visited Vijayanagara came from
A) Italy
B) Persia
C) Portugal
D) Arabia
Answer:
A) Italy

Question 9.
The Portuguese traveller, who visited Krishnadevaraya’s court was
A) Nicolo Conti
B) Paes
C) Nuniz
D) Razzak
Answer:
B) Paes

Question 10.
The person who visited the Vijayanagara kingdom in 1537 A.D was
A) Nuniz
B) Marco Polo
C) Alberuni
D) Amir Khusro
Answer:
A) Nuniz

Question 11.
The rulers of Vijayanagara imported horses from
A) Arabia
B) Iran
C) Portugal
D) All the three countries
Answer:
D) All the three countries

Question 12.
Which Vijayanagara ruler started recruiting Muslims to train his soldiers in the new modes of warfare?
A) Harihara Raya – II
B) Krishnadevaraya
C) Devaraya – II
D) None of these
Answer:
C) Devaraya – II

Question 13.
Which Vijayanagara ruler permitted the construction of mosques in the capital city?
A) Krishnadevaraya
B) Devaraya – II
C) Harihararaya – II
D) Aliyaramaraya
Answer:
B) Devaraya – II

Question 14.
The revenue assignments given to the nobles in the Sultanate period were called?
A) Iqtas
B) Subahs
C) Paraganas
D) Jagirs
Answer:
A) Iqtas

Question 15.
The nayaka who challenged the Vijayanagara kings was
A) Narasanayaka
B) Achyutaraya
C) Devaraya – II
D) Harihararaya-II
Answer:
A) Narasanayaka

Question 16.
In the Vijayanagara Empire, the village administration was done by
A) Gramani
B) Nayaka
C) Amir
D) Mukti
Answer:
B) Nayaka

Question 17.
The main imports of Vijayanagara rulers were ………..
A) Horses
B) Guns
C) Cannons
D) All the above
Answer:
D) All the above

Question 18.
When did Krishnadevaraya ascend the throne?
A) 1509 AD
B) 1519 AD
C) 1529 AD
D) 1520 AD
Answer:
A) 1509 AD

Question 19.
How long had Krishnadevaraya ruled the Vijayanagara Kingdom?
A) 40 years
B) 25 years
C) 20 years
D) 30 years
Answer:
C) 20 years

Question 20.
The European country which had es¬tablished their power in India by the Krishnadevaraya was
A) England
B) Spain
C) France
D) Portugal
Answer:
D) Portugal

Question 21.
In India where did the Portuguese establish their power?
A) Mumbai
B) Calicut
C) Goa
D) Koehin
Answer:
C) Goa

Question 22.
Which Vijayanagara ruler personally visited the temples Tirupathi, Srisailam and Ahobilam?
A) Devaraya – II
B) Harihararaya
C) Harihararaya – II
D) Krishnadevaraya
Answer:
D) Krishnadevaraya

Question 23.
Which of the following rulers was a great patron of Telugu literature?
A) Devaraya -II
B) Harihararaya
C) Saluva Narasimha
D) Sri Krishnadevaraya
Answer:
D) Sri Krishnadevaraya

Question 24.
‘Amuktamalyada’ was written by
A) Allasani Peddana
B) Mukku Timmana
C) Dhurjati
D) Krishnadevaraya
Answer:
D) Krishnadevaraya

Question 25.
‘Ashtadiggajas’ – eight poets adorned the court of
A) Saluva Narasimha
B) Devaraya – II
C) Krishnadevaraya
D) Aliya Rama Raya
Answer:
C) Krishnadevaraya

Question 26.
The battle of Rakkasi tangadi was held in the year
A) 1556 AD
B) 1546 AD
C) 1555 AD
D) 1565 AD
Answer:
D) 1565 AD

Question 27.
The Vijayanagara ruler who was defeated in the Rakkasi tangadi war was
A) Achyutaramaraya
B) Aliya Rama Raya
C) Harihara Raya – II
D) Saluva Narasimha
Answer:
B) Aliya Rama Raya

Question 28.
After the war of Tallikota, the capital of Vijayanagara was shifted to
A) Hampi
B) Anegondi
C) Chandragiri
D) Tirupathi
Answer:
C) Chaodragiri

Question 29.
Vijayanagara means
A) city of heavens
B) city of victories
C) city on the land
D) all the above
Answer:
B) city of victories

Question 30.
Vijayanagar was built on the banks of this river
A) Krishna
B) Tungabhadra
C) the Godavari
D) Vamsadhara
Answer:
B) Tungabhadra

Question 31.
…………… says that the city had seven rings of fortifications.
A) Archaeologists
B) Abdul Razak
C) Paes
D) None
Answer:
B) Abdul Razak

Question 32.
…………. Kings adopted guns and canons in their forces.
A) Vijayanagara
B) Cholas
C) Pallavas
D) None
Answer:
A) Vijayanagara

Question 33.
Most of the Amaranayakas were ………….. warriors.
A) English
B) Telugu
C) Muslims
D) None
Answer:
B) Telugu

Question 34.
The Vijayanagara empire lasted for about years.
A) 200
B) 250
C) 300
D) 350
Answer:
B) 250

Question 35.
The dynasties that ruled the Vijayanagara empire
A) Sangama, Saluva
B) Tuluva, Araviti
C) Both A & B
D) Slave
Answer:
C) Both A & B

Question 36.
The king gave due importance of the Telugu language.
A) Harihararaya
B) Bukkaraya
C) Narasimharaya
D) Srikrishnadevaraya
Answer:
D) Srikrishnadevaraya

Question 37.
Krishna Devaraya paid special attention to the ………….. of his kingdom.
A) Church
B) Mosques
C) Temples
D) None
Answer:
C) Temples

Question 38.
The Bahamani kingdom was divided into 5 small kingdoms.
A) 1489 -1520 AD
B) 1500 -1530 AD
C) 1540 -1550 AD
D) 1550 – 1560 AD
Answer:
A) 1489 -1520 AD

Question 39.
Identify mismatches.
1) Harihararaya -1336 – 1357 AD
2) Devaraya – II -1426 -1446 AD
3) Srikrishnadevaraya – 1509 – 1529 AD
4) Aliya Ramaraya – 1543 – 1565 AD
A) 1
B) 1, 2
C) 1,2, 3, 4
D) None
Answer:
D) None

Question 40.
The Italian pilgrim visited Vijayanagara in 1420 AD.
A) Nicolo Conti
B) Abdul Razzak
C) Domingo Paes
D) Nuniz
Answer:
A) Nicolo Conti

Question 41.
The Persian trader visited Vijayanagara in 1443 AD.
A) Abdul Salani
B) Abdul Razzak
C) Domingo Paes
D) Nunico
Answer:
B) Abdul Razzak

Question 42.
The Portuguese traveller visited Vijayanagara in 1520 AD.
A) Nuniz
B) Abdul Razzak
C) Domingo Paes
D) Nicolo Conti
Answer:
C) Domingo Paes

Question 43.
“The king has made a very strong city; fortified with walls and towers …. These walls are not made like those of other cities, but are made of strong masonry…. and inside, very beautiful rows of building with flat roofs …………
A) Nuniz
B) Abdul Razzak
C) Domingo Paes
D) Nicolo Conti
Answer:
C) Domingo Paes

Question 44.
In the view of archaeologists, the city was divided into parts.
A) 2
B) 3
C) 4
D) 5
Answer:
C) 4

Question 45.
Devaraya – II started recruiting ………….. fighters to train his Soldiers in the new modes of warfare.
A) Hindu
B) Muslim
C) Christians
D) None
Answer:
B) Muslim

Question 46.
“This king has a million fighting troops, Which include 35,000 cavalries, ready to be dispatched to any quarter whenever necessary….. He is the most feared king in these parts”…. who said these words?
A) Abdul Razzak
B) Domingo Paes
C) Nuniz
D) Nicolo Conti
Answer:
B) Domingo Paes

Question 47.
Besides the troops supplied by the captains, the king has his own troops whom he pays were called as
A) Nayakas
B) Amaranayakas
C) Swarga Dhamakas
D) Army captains
Answer:
B) Amaranayakas

Question 48.
‘Amaram’ in Vijayanagara kingdom means
A) Dandanayakas
B) Army
C) The power of collecting Revenue in a particular region
D) The administrative officer of a particular region
Answer:
C) The power of collecting Revenue in a particular region

Question 49.
The administrative period of Sri Krishnadevaraya
A) 1509 – 1529 AD
B) 1530 -1559 AD
C) 1508 -1509 AD
D) 1500 – 1529 AD
Answer:
A) 1509 – 1529 AD

Question 50.
Srikrishnadevaraya maintained a friendly relation with these Europeans
A) The Portuguese
B) The British
C) The French
D) The Dutch
Answer:
A) The Portuguese

Question 51.
Srikrishnadevaraya got these from the Portuguese
A) Horses
B) Explosives
C) Both A & B
D) None
Answer:
C) Both A & B

Question 52.
Srikrishnadevaraya visited these places of his own ………….
A) Tirupati
B) Srisailam
C) Ahobilam
D) All the above
Answer:
D) All the above

Question 53.
Srikrishnadevaraya explained the biography of this god in ‘Amukta- malyada’
A) Srikrishna
B) Srirama,
C) Andal
D) Meenakshi
Answer:
C) Andal

Question 54.
This person was not in Ashtadiggajas of Srikrishnadevaraya court.
A) Pingali Surana
B) Ramaraja Bhushana
C) Bhattumurthy
D) Ayyalaraju Ramabadhrudu
Answer:
C) Bhattumurthy

Question 55.
The year of Thallikota war
A) 1560
B) 1565
C) 1570
D) 1575
Answer:
B) 1565

Question 56.
Who won the Thallikota war?
A) Aliya Ramaraya
B) Achyutadevaraya
C) Bahmani Sultans
D) None
Answer:
C) Bahmani Sultans

Question 57.
The towering temple gateway is called.
A) Raja gopuram
B) Goparam
C) Raja
D) None
Answer:
A) Raja gopuram

Question 58.
Find out the correct statement.
A. Sri Krishnadevaraya was the founder of the Vijayanagara empire.
B. Hari Hara Raya, Bukkaraya were the founders of the Vijayanagara empire.
A) A only
B) B only
C) Both A & B
D) None
Answer:
B) B only

Question 59.
Bukkaraya: Sangama dynasty: : Sri Krishnadevaraya: ………………
A) Araviti
B) Saluva
C) Tulava
D) Sangama
Answer:
C) Tulava

Question 60.
Nicolo Conti: Italy:: Abdul Razzak: ……………….
A) Portuguese
B) Spain
C) Germany
D) Persia
Answer:
D) Persia

Question 61.
The city of Vijayanagara was looked at and destroyed in this war.
A) Battle of Khanwa
B) Battle of Bauxes
C) Battle Plassey
D) Rokkasi Tangadi
Answer:
D) Rokkasi Tangadi

Question 62.
He was permitted the construction of mosques in the capital city where the Muslim soldiers were garrisoned.
Q. Who permitted to the construction of mosques in the capital city?
A) Sri Krishnadevaraya
B) Rama Raya
C) Devaraya II
D) Achyutharaya
Answer:
C) Devaraya II

Question 63.
The picture is

A) Thousand Pillar Temple
B) Konark Surya Chariot
C) Stone Chariot of Hazara Rama temple
D) Bronze Palanquin
Answer:
C) Stone Chariot of Hazara Rama temple

Question 64.
The power of the Vijayanagara kings grew further during the time of Krishnadevaraya’s successors Achyutadeva Raya and Aliya Rama Raya. As the Bahamani rulers were unable to fight the Vijayanagara individually, by 1565 AD, all the five Bahmahi kingdoms joined together and defeated Rama Raya in Rakkasi tangadi war also known as Tallikota war, looted, and destroyed the city of Vijayanagara.
Q. Who defeated the Vijayanagara empire?
A) Bahamani Sultans
B) Deccan Sardars
C) Mangols
D) Chihalgani Sardars
Answer:
A) Bahamani Sultans

Question 65.
Rakkasi Tangadi is also known as
A) Kalinga
B) Somanadh
C) Tallikota
D) None
Answer:
C) Tallikota

Question 66.
The founder of Bahmani Sultans Kingdom was
A) Alauddin Bahman Shah
B) Abdul Razzak
C) Ghazani
D) Ghori
Answer:
A) Alauddin Bahman Shah

Question 67.
The most important poetic work of Sri Krishnadevaraya is
A) Vani Na Rani
B) Bhagavatam
C) Amuktamalyada.
D) Devi Chandra Gupta
Answer:
C) Amuktamalyada.

Question 68.
The base of Amuktamalyada was
A) The life of Kannagi
B) The life of Gowthami
C) The life of Meer Bai
D) The life of Andal
Answer:
D) The life of Andal

Question 69.

The statue belongs to ………….. metal
A) Gold
B) Silver
C) Bronze
D) Copper
Answer:
C) Bronze

Question 70.
The statue is installed at
A) Sri Rangam
B) Tirumala
C) Sri Sailam
D) Hyderabad
Answer:
B) Tirumala

Question 71.
Ashtadiggajas: Sri Krishnadevaraya:: Navaralnas : …………….
A) Ashoka
B) Kanishka
C) Raja Raja
D) Chandra Gupta Vikramaditya II
Answer:
D) Chandra Gupta Vikramaditya II

Question 72.

Tallikota war took place during these period
A) Devaraya II
B) Aliya Rama Raya
C) Venkatapathi Raya
D) Achyutaraya
Answer:
B) Aliya Rama Raya

Question 73.
Who selected Muslim fighters in his army?
A) Hari Hara Raya
B) Achyutha Raya
C) Aliya Rama Raya
D) Devaraya – II
Answer:
D) Devaraya – II

Question 74.

The Gopuram is in …………
A) Madras
B) Tirupathi
C) Kanchipuram
D) Madurai
Answer:
C) Kanchipuram

Question 75.
The following travellers visited the Vijayanagara Kingdom.
Find the wrong statement.
1) Nicolo Conti in 1420 A.D
2) Abdul Razzak in 1443 A.D
3) Paes in 1520 A.D
4) Nuniz in 1620 A.D
A) 1 only
B) 2 only
C) 1, 2, 3
D) 4 only
Answer:
D) 4 only

Question 76.
“Ashtadiggajas” were
A) A group of emperors in the Vijayanagara Dynasty
B) A group of administrators during the period of Shivaji
C) A group of Sabha members in the Chola Dynasty
D) A group of poets during the period of Krishnadevaraya
Answer:
D) A group of poets during the period of Krishnadevaraya

Question 77.
Under which ruler did the style of temple architecture include Vimanas and Gopurams?
A) Moughal Ruler
B) British Ruler
C) Delhi Sultan Ruler
D) Vizayanagara Ruler
Answer:
D) Vizayanagara Ruler

Question 78.
Vijayanagara dynasty lies on the bank of the river
A) Krishna
B) the Godavari
C) Tungabhadra
D) Penna
Answer:
C) Tungabhadra

Question 79.
Which of the following is appreciable regarding Srikrishna Devaraya
A) A patron of Telugu literature
B) Administration
C) Construction of thanks
D) All the above
Answer:
D) All the above

Question 80.
According to Paes, pearls and diamonds are sold in streets in which kingdom?
A) Kakatiya
B) Chola
C) Vijayanagara
D) Bahamani
Answer:
C) Vijayanagara

Practice the AP 7th Class Social Bits with Answers Chapter 12 The Kakatiyas – Emergence of the Regional Kingdom on a regular basis so that you can attempt exams with utmost confidence.

AP State Syllabus 7th Class Social Bits 12th Lesson The Kakatiyas – Emergence of the Regional Kingdom with Answers

Choose the correct answer.

Question 1.
Sammakka and Sarakka were …………
A) Tribal women
B) Spiritualists
C) Queens
D) Sisters
Answer:
A) Tribal women

Question 2.
The first poetic work in Telugu.
A) Srimad Andhra Ramayana
B) Srimad Andhra Mahabharatam
C) Sundara Kanda
D) Andhra Bhagavatam
Answer:
B) Srimad Andhra Mahabharatam

Question 3.
Rudramadevi ruled for ……….. years.
A) 20
B) 15
C) 27
D) 22
Answer:
C) 27

Question 4.
A woman ruler killed by her nobles was …………
A) Rudrama Devi
B) Jhansi Laxmi Bai
C) Chand Bibi
D) Raziya Sultana
Answer:
D) Raziya Sultana

Question 5.
The language of the court in Kakatiya kingdom.
A) Telugu
B) Kannada
C) Kannada, Telugu
D) Tamil
Answer:
A) Telugu

Question 6.
Village heads were called
A) Patlas
B) Rattadis
C) Chairpersons
D) Mukthis
Answer:
B) Rattadis

Question 7.
Thousand Pillared Temple is in
A) Aleru
B) Raghunafhapalli
C) Anmakonda
D) Parakala
Answer:
C) Anmakonda

Question 8.
The city was divided into
A) Iqtas
B) Valnadus
C) Panchs
D) Vadas
Answer:
D) Vadas

Question 9.
A Sasana of Ganapatideva was found in …………..
A) Khammam
B) Karimnagar
C) Motupalli
D) Bhupal Palli
Answer:
C) Motupalli

Question 10.
The first books in ……….. were written during Kakatiyas.
A) Hindi
B) Marathi
C) Kannada
D) Telugu
Answer:
D) Telugu

Question 11.
The last important ruler of Kakatiya dynasty was ………..
A) Prola
B) Rudradeva
C) Prataparudra
D) Gariapatideva
Answer:
C) Prataparudra

Question 12.
Marco Polo was an …………. traveller.
A) American
B) Russian
C) Italian
D) Iranian
Answer:
C) Italian

Question 13.
Vinukonda Vallabharaya wrote ………….
A) Kridabhiramamu
B) Prataparudra Charitramu
C) Raja Tarangini
D) Katha Sagaram
Answer:
A) Kridabhiramamu

Question 14.
During …………. rule the capital was shifted from Anmakonda to Orugallu.
A) Rudradeva
B) Rudramadevi
C) Prola-II
D) Ganapatideva
Answer:
A) Rudradeva

Question 15.
Svayambhu Siva Temple was in the …………. of the city.
A) North side
B) South side
C) Centre
D) North East side
Answer:
C) Centre

Question 16.
Palanati Virulakatha was written by
A) Rudramadevi
B) Srinadha
C) Ganpati Deva
D) None
Answer:
B) Srinadha

Question 17.
Who wrote Srimadandhra Mahabharatam?
A) Nannaya
B) Tikkana
C) Errapragada
D) AH the above
Answer:
D) AH the above

Question 18.
The Kavitrayamu belonged to this period.
A) 1000 AD – 1400 AD
B) 1400 AD- 1600 AD
C) 1600 AD-1800 AD
D) 1800 AD – 2000 AD
Answer:
A) 1000 AD – 1400 AD

Question 19.
Vidyanatha wrote the book
A) Ramabhyudayam
B) Prataparudra Yashobhushanam
C) Kridabhiramamu
D) Prataparudra Charitramu
Answer:
B) Prataparudra Yashobhushanam

Question 20.
Ruling period of Rudrama Devi
A) 1262-1289 AD
B) 1289-1323 AD
C) 11584195 AD
D) 1116-1157 AD
Answer:
A) 1262-1289 AD

Question 21.
The Kakatiyas traced their lineage to certain
A) Durjaya
B) Prolaraja
C) Rudradeva
D) Ganapathi Deva
Answer:
A) Durjaya

Question 22.
Kakatiyas adopted this language as the favoured language of the court.
A) Telugu
B) Tamil
C) Kannada
D) Malayala.
Answer:
A) Telugu

Question 23.
Identify the mismatch.
1) Prola Raja – II – AD -1116 -1157
2) Rudradeva – AD -1158 -1195
3) Ganapathi Deva – AD – 1199 -1262
4) Rudramadevi – AD – 1262 – 1289
5) Prataparudra – AD – 1289 – 1323
A) 1,2, 3, 4
B) 1,2, 3
C) 3, 4, 5
D) All are correct
Answer:
D) All are correct

Question 24.
Kakatiyas were Samanthas to these in the beginning
A) Rashtrakutas & Chalukyas
B) Rulers of Vijayanagara
C) Kakatiyas
D) Pallavas
Answer:
A) Rashtrakutas & Chalukyas

Question 25.
The Kakatiyas emerged as indepen¬dent rulers after the fall of the ……………
A) Reddy Rajulu
B) Rulers of Vijayanagara
C) Western Chalukyas
D) Pallavas
Answer:
C) Western Chalukyas

Question 26.
This person changed the capital from Anmakonda to Orugallu
A) Prolaraju
B) Rudradeva
C) Ganapati Deva
D) Rudramadevi
Answer:
B) Rudradeva

Question 27.
Palanati Virulakatha written by Srinatha around
A) 1350s
B) 1450s
C) 1550s
D) 1650s
Answer:
A) 1350s

Question 28.
The woman ruler that ruled from her capital Warangal in the medieval period.
A) Razia Sultana
B) Rudramadevi
C) Peramba
D) Ramabai
Answer:
B) Rudramadevi

Question 29.
The Italian pilgrim Marco Polo visited this court
A) Prolaraju – II
B) Rudradeva
C) Ganapati Deva
D) Rudramadevi
Answer:
D) Rudramadevi

Question 30.
In inscriptions Rudramadevi was known as
A) Rudradeva
B) Rudradeva Maharaja
C) Razia Sultana
D) Prataprudra
Answer:
B) Rudradeva Maharaja

Question 31.
This revolted during the rule of Rudramadevi
A) Manumasiddhi
B) Ambadeva
C) Veerabhadra
D) Kumaradeva
Answer:
B) Ambadeva

Question 32.
Nayankara with Nayak title, were appoin ted by ………… to encourage the skilled warriors.
A) Rudramadevi
B) Prataparudra
C) All the above
D) None
Answer:
C) All the above

Question 33.
The Kakatiyas brought large tracts of land under cultivation by building
A) Tanks
B) Wells
C) Both A & B
D) Canals
Answer:
C) Both A & B

Question 34.
The Kakatiya women who donated lands on a large scale for building temples.
A) Muppamamba
B) Mailamma
C) Both A & B
D) Ganapamba
Answer:
C) Both A & B

Question 35.
The main source of income in the Kakatiya period.
A) land cess
B) trade tax
C) property tax
D) wealth tax
Answer:
B) trade tax

Question 36.
The famous shipyard during the Kakatiya period.
A) Motupalli
B) Kayal
C) Visakhapatnam
D) Nijampatnam
Answer:
A) Motupalli

Question 37.
The new’ kingdom, with Delhi as its centre, was established in ………
A) 1190
B) 1180
C) 3170
D) 1160
Answer:
A) 1190

Question 38.
This Sultan defeated Prataparudra
A) Mohammad-bin-Tugluq
B) Alladin-Khilji
C) Mubarak-Khilji
D) None
Answer:
A) Mohammad-bin-Tugluq

Question 39.
The Kakatiya dynasty ruled out in the year
A) 1300 AD
B) 1320 AD
C) 1323 AD
D) 1350 AD
Answer:
C) 1323 AD

Question 40.
The history of Palanati Warriors was written by
A) Bara
B) Nannaya
C) Tikkana
D) Srinadha
Answer:
D) Srinadha

Question 41.
The Palanati Warrior who said the caste must be set aside when one goes to war.
A) Brahmanayudu
B) Balachandra
C) Nalagama Raju
D) Nagamma
Answer:
B) Balachandra

Question 42.

The picture belongs to
A) Cholas
B) Chalukyas
C) Kakatiyas
D) Pandyas
Answer:
C) Kakatiyas

Question 43.

The coin belongs to
A) Vijayanagaras
B) Bahmanis
C) Pallavas
D) Kakatiyas
Answer:
D) Kakatiyas

Question 44.
One appreciable feature of Rudrama devi
A) She was fearless and subdued enemies
B) She encouraged poets
C) She collected heavy taxes
D) She gave freedom to Nayakas
Answer:
A) She was fearless and subdued enemies

Question 45.
An important appreciable feature of Kakatiyas to agriculture
A) They brought vast forest lands to agriculture
B) They built tanks
C) They encouraged tribes
D) They introduced new crops
Answer:
B) They built tanks

Question 46.
Read the information and answer the following question.
Srimad – Andhra Mahabharatamu is the first poetic work in Telugu which was compose by Kavitrayamu.
Q. These are called Kavitrayamu
A) Pothana, Nannaya, Singana
B) Nannaya, Tikkana, Errapragada
C) Srinadha, Durjati, Tenali Rama- krishna
D) Peddana, Mallana, Tikkana
Answer:
B) Nannaya, Tikkana, Errapragada

Question 47.
Delhi Sultans : …………. :: Kakatiyas : Rudramadevi
A) Kannamba
B) Raziya Sulthana
C) Nagama
D) Padmini
Answer:
B) Raziya Sulthana

Question 48.
Sultan Mohammed bin Tughlaq was able to defeat Kakatiya Pratapa- rudra in 1323 A.D.
Q. When did Kakatiya kingdom ended?
A) 1200 A.D
B) 1100 A.D
C) 1327 A.D
D) 1323 A.D
Answer:
D) 1323 A.D

Question 49.
Prola -11 – 1116- 1157 A.D
Rudradeva – 1158 – 1195 A.D
Ganapati Deva – 1199 – 1262 A.D
Rudramadevi – 1262- 1289 A.D
Prataparudra – 1289 – 1323 A.D
Q. Thousand Pillared Temple was built by
A) Rudradeva
B) Ganapathi deva
C) Rudramadevi
D) Prataparudra
Answer:
A) Rudradeva

Question 50.
During this period capital was shifted from Anmakonda to Orugallu.
A) Rudramadevi
B) Rudradeva
C) Ganapathi Deva
D) None
Answer:
B) Rudradeva

Question 51.
Rudrama Devi calls herself as
A) Rudradeva Maharaj
B) Rudra
C) Ganapathideva
D) Prataparudra
Answer:
A) Rudradeva Maharaj

Question 52.
The famous port of Kakatiyas
A) Motupalli
B) Kolleru
C) Nizampatnam
D) Srirangam
Answer:
A) Motupalli

Question 53.
Rudrama and her grandson …………… faced many revolts and took several steps to control these chiefs.
A) Rudradeva
B) Ganapatideva
C) Prataparudra
D) Prola
Answer:
C) Prataparudra

Question 54.
The Motupalli port is connected with which of the following dynasties?
A) Vijayanagara
B) Cholas
C) Kakatiyas
D) Western Chalukyas
Answer:
C) Kakatiyas

Question 55.
Which of the following is correctly matched?
A) Saluva Narasimharaya – Abdul Razzak
B) Devaraya II – Domingo Paes
C) Rudrama Devi – Marco Polo
D) Krishnadevaraya – Nuniz
Answer:
C) Rudrama Devi – Marco Polo

Question 56.
Kakatiyas adopted which one among the following as the favoured language of the court?
A) Sanskrit
B) Telugu
C) Tamil
D) Kannada
Answer:
B) Telugu

Practice the AP 10th Class Physical Science Bits with Answers Chapter 8 Chemical Bonding on a regular basis so that you can attempt exams with utmost confidence.

AP State Syllabus 10th Class Physical Science Bits 8th Lesson Chemical Bonding with Answers

CONCEPT -1: Octet Rule & Lewis Dot Structures

Question 1.
By the late 19th century and early twentieth century the forces known by scientists are ……………..
A) Gravitational
B) Magnetic
C) Electrostatic
D) All of these
Answer:
D) All of these

Question 2.
Atoms tends to combine when
A) Attraction is more than repulsion
B) Attraction is less than repulsion
C) Attraction is equal to repulsion
D) None of these
Answer:
A) Attraction is more than repulsion

Question 3.
Valance shell means ……………..
A) inner shell
B) middle shell
C) outermost shell
D) both A and B
Answer:
C) outermost shell

Question 4.
Electrons in …………….. shell are responsible for the formation of bonds between atoms.
A) inner
B) valance
C) outermost
D) both B and C
Answer:
D) both B and C

Question 5.
Noble gases belong to …………….. group
A) VIIIA
B) 18th
C) 0
D) All of these
Answer:
D) All of these

Question 6.
…………….. exhibits octet configuration.
A) Transition elements
B) Inner transition elements
C) Representative elements
D) Noble gases
Answer:
D) Noble gases

Question 7.
The valance electrons in the atom of an element is depicted in short form by …………….. symbol or …………….. dot structure
A) Newton, electron
B) Lewis, electron
C) Bohr, electron
D) Lewis, proton
Answer:
B) Lewis, electron

Question 8.
The Lewis dot structure of Argon

Answer:
A

Question 9.
Match the following:

A) a → i, b → ii, c → iii, d → iv
B) a → iv, b → iii, c → ii, d → i
C) a → iii, b → i, c → iv, d → ii
D) a → iv, b → i, c → ii, d → iii
Answer:
C) a → iii, b → i, c → iv, d → ii

Question 10.
Match the following:
Group — Valency
a) I group — i) +2
b) II group — ii) -1
c) VI group — iii) + 1
d) VII group — iv) -2
A) a → i, b → ii, c → iii, d → iv
B) a → iii, b → i, c → iv, d → ii
C) a → iv, b → iii, c → ii, d → i
D) a → iii, b → iv, c → ii, d → i
Answer:
B) a → iii, b → i, c → iv, d → ii

Question 11.
Statement I: Eight electrons in the outermost shell give stability to the ion or atom.
Statement II: Kernel is the nucleus and all other electrons in the atom except the outer most shell electrons.
A) Both statements are true
B) Statement I is true and statement II is false
C) Statement I is false and statement II is true
D) Both are false
Answer:
A) Both statements are true

Question 12.
All inert gases except He have …………….. configuration
A) doublet
B) triplet
C) octet
D) helptet
Answer:
C) octet

Question 13.
The inert gas which does not have octet configuration ……………..
A) Argon
B) Helium
C) Neon
D) Krypton
Answer:
B) Helium

Question 14.
The force of attraction between any two atoms or a group of atoms that results in a stable entity is called …………………
A) Physical bond
B) Chemical bond
C) Native bond
D) None of these
Answer:
B) Chemical bond

Question 15.
Chemical bond among these is ……………..
A) Ionic bond
B) Covalent bond
C) Polar covalent bond
D) All of these
Answer:
D) All of these

Question 16.
Ionic bond was proposed by ……………..
A) Kossel
B) G.N. Lewis
C) Linus Pauling
D) Sidgwick
Answer:
A) Kossel

Question 17.
Transfer of electrons from one atom to other atom leads to…………….. bond.
A) Ionic bond
B) Covalent bond
C) Polar covalent bond
D) Coordinate covalent bond
Answer:
A) Ionic bond

Question 18.
Metals generally form ……………..
A) cation
B) anion
C) positive ion
D) both A and C
Answer:
D) both A and C

Question 19.
Non metals generally form ……………..
A) cation
B) anion
C) negative ion
D) both B and C
Answer:
D) both B and C

Question 20.
The valency of I, II, III groups respectively are ……………..
A) 1, 2, 3
B) 3, 2,1
C) 4, 5, 6
D) 0,1, 2
Answer:
A) 1, 2, 3

Question 21.
The valency of V, VI, VII groups respectively are………………
A) 1, 2, 3
B) 3, 2,1
C) 0,1,2
D) 1, 2,4
Answer:
B) 3, 2,1

Question 22.
The force of attraction existing between two oppositely charged ions is ……………..
A) Ionic bond
B) Electrostatic bond
C) Electrovalent bond
D) All of these
Answer:
D) All of these

Question 23.
The electron configuration of Na⁺ is
A) 1s² 2s² 2p⁶ 3s¹
B) 1s²2s²2p⁶
C) 1s² 2s² 2p⁶ 3s²
D) 1s² 2s² 2p⁵
Answer:
B) 1s²2s²2p⁶

Question 24.
Which of the following has electron configuration 1s² 2s² 2p⁶
i) Na⁺
ii) F^–
iii) Ne
iv) Mg²⁺
S A) only (i)
B) only (ii)
C) both (i) and (ii)
D) all of these
Answer:
D) all of these

Question 25.
The bond formed between metal and a non – metal is ……………..
A) Covalent bond
B) Ionic bond
C) Polar covalent bond
D) Dative bond
Answer:
B) Ionic bond

Question 26.
Which of the following element is electronegative ?
A) Fluorine
B) Sodium
C) Potasium
D) Ca
Answer:
A) Fluorine

Question 27.
The following statements are not true for formation of cation by an atom of element.
i) It has high atomic size
ii) It has high electronegativity
iii) It has low ionization energy
iv) It has high electron affinity
A) both (i) and (iii)
B) both (ii) and (iv)
C) (i), (ii) and (iv)
D) all of these
Answer:
B) both (ii) and (iv)

Question 28.
Formation of anion is favoured by …………….. of an atom.
i) high ionisation potential
ii) high electron affinity
iii) small atomic size
iv) low electro negativity
A) only (i)
B) both (i) and (ii)
C) (i), (ii) and (iii)
D) all of these
Answer:
C) (i), (ii) and (iii)

Question 29.
Sharing of electrons between atoms leads to the formation of chemical bond known as……………..
A) Ionic bond
B) Covalent bond
C) Coordinate covalent bond
D) Dative bond
Answer:
B) Covalent bond

Question 30.
Covalent bond was proposed by……………..
A) Kossel
B) G.N. Lewis
C) Bohr
D) Pauling
Answer:
B) G.N. Lewis

Question 31.
The number of opposite charged ions surrounded by given ion is called ……………..
A) Avagadro number
B) Atomic number
C) Mass number
D) Coordination number
Answer:
D) Coordination number

Question 32.
Match the following:
a) Two metals — i) Ionic bond
b) Metaland non – metal — ii) Polar covalent bond
c) Two similar iii) Metallic bond non – metals
d) Two dissimilar iv) Covalent bond non – metals
A) a → i, b → ii, c → iii, d → iv
B) a → iv, b → iii, c → ii, d → i
C) a → iii, b → i, c → iv, d → ii
D) a → iv, b → i, c → ii, d → iii
Answer:
C) a → iii, b → i, c → iv, d → ii

Question 33.
The structure of NaCl is ……………..
A) Body centred cubic lattice
B) Face centred cubic lattice
C) Octahedral
D) Pentagonal bipyramidal
Answer:
B) Face centred cubic lattice

Question 34.
If an element X belongs to II group and another element Y belongs to VII group then the compound formed between these elements has fomula :
A) XY
B) X₂Y
C) X Y₂
D) X₂ Y₃
Answer:
C) X Y₂

Question 35.
Which of the following elements is electronegative?
A) Sodium
B) Oxygen
C) Magnesium
D) Calcium
Answer:
B) Oxygen

Question 36.
An element “X forms an ionic compound with another element Y. Then the charge on the ion formed by X is ……………..
A) +1
B) +2
C) -1
D) -2
Answer:
A) +1

Question 37.
Match the following:
a) Sharing one pair of electrons — i) Double bond
b) Sharing two pairs of electrons — ii) Single bond
c) Sharing three — iii) Triple bond pairs of electrons
A) a → i, b → ii, c → iii
B) a → iii, b → ii, c →i
C) a →ii, b →i, c → iii
D) a →iii, b → i, c → ii
Answer:
C) a →ii, b →i, c → iii

Question 38.
Match the following:
a) Single bond i) 0₂
b) Double bond ii) N₂
c) Triple bond iii) H₂
A) a → i, b → ii, c → iii
B) a → iii, b → ii, c → i
C) a → i, b → iii, c → ii
D) a → iii, b → i, c → ii
Answer:
D) a → iii, b → i, c → ii

Question 39.
The number of covalent bonds in ammonia molecule is ……………..
A) 1
B) 2
C) 3
D) 4
Answer:
C) 3

Question 40.
Bond length is usually given in……………..
A) angstrom unit
B) m
C) nm
D) Both A and C
Answer:
D) Both A and C

Question 41.
1A° = ……………..
A) 10^{-10</sup? m
B) 0.1 nm
C) 100 pm
D) all of these
Answer:
D) all of these}

Question 42.
The drawbacks of electron theory of valance is/are ……………..
A) Bond lengths and bond energies are different for different atoms of elements that form the bond
B) Bond angles between the bonded atoms
C) Shapes of molecules
D) All of these
Answer:
D) All of these

Question 43.
An element A forms a chloride ACl₄. The number of electrons in the valance shell of A.
A) 1
B) 2
C) 3
D) 4
Answer:
D) 4

Question 44.
Valance shell electron pair repulsion theory was proposed by ……………..
A) Sidgwick and Powell
B) Pauling
C) Lewis
D) Kossel
Answer:
A) Sidgwick and Powell

Question 45.
The correct order of repulsion between electron pairs is ……………..
A) b.p – b.p > l.p – l.p > b.p – l.p
B) l.p – l.p > b.p – l.p > b.p – b.p
C) b.p – l.p > l.p – l.p > b.p – b.p
D) l.p – l.p > b.p – b.p > b.p – l.p
Answer:
B) l.p – l.p > b.p – l.p > b.p – b.p

Question 46.
Match the following:
a) BeCl₂ — i) 120
b) BF₃ — ii) 109° 28′
c) CH₄ — iii) 104° 31
d) H₂O — iv) 180°
A) a → i, b → ii, c → iii, d → iv
B) a →iv, b → iii, c → ii, d → i
C) a → iv, b → i, e → ii, d →iii
D) a → iv, b → i, c → ii, d → iii
Answer:
C) a → iv, b → i, e → ii, d →iii

Question 47.
Match the following:
a) Two bond pairs — i) trigonal planar without lone pair
b) Three bond pairs — ii) linear without lone pair
c) Four bond pairs — iii) tetrahydral without lone pair
A) a → i, b → ii, c → iii
B) a → ii, b → i, c → iii
C) a → iii, b → ii, c → i
D) a → ii, b → iii, c → i
Answer:
B) a → ii, b → i, c → iii

Question 48.
The shape and bond angle in Ammonia molecule is ………………..
A) Pyramidal, 104° 311
B) Tetrahydral, 107° 48’
C) Pyramidal, 107° 48’
D) Tetrahydral, 104° 31′
Answer:
C) Pyramidal, 107° 48’

Question 49.
The shape and number of lone pairs of electrons in water molecule is
A) Pyramidal, 2
B) V shape, 2
C) V shape, 1
D) Pyramidal, 1
Answer:
B) V shape, 2

Question 50.
Valance bond theory was proposed by ………………..
A) Lewis
B) Linus Pauling
C) Sidgwick and Powell
D) Kossel
Answer:
B) Linus Pauling

Question 51.
If orbitals overlap along the inter nuclear axis then bond formed is known as ………………..
A) Sigma bond
B) Pi bond
G) Dative bond
D) Banana bond
Answer:
A) Sigma bond

Question 52.
The following diagram shows ……………….. overlap

A) s – s
B) p – p
C) s – p
D) None of these
Answer:
A) s – s

Question 53.
The following diagram shows ……………….. overlap

A) s – s
B) p – p
C) s – p
D) None of these
Answer:
B) p – p

Question 54.
The number of σ and π bonds in Oxygen molecule is ………………..
A) 1,1
B) 1, 2
C) 1, 0
D) None of these
Answer:
A) 1,1

Question 55.
The number of σ and π bonds in Nitrogen molecule is
A) 1, 0
B) 1, 2
C) 1,1
D) None of these
Answer:
B) 1, 2

Question 56.
Match the following:
a) sp hybridisation — i) BF₃
b) sp2 hybridisation — ii) BeCl₂
c) sp3 hybridisation — iii) CH₄, NH₃, H₂O
A) a → ii, b →i, c → iii
B) a → i, b → ii, c → iii
C) a → iii, b → ii, c → i
D) a →iii, b → i, c → ii
Answer:
A) a → ii, b →i, c → iii

Question 57.
Which of the following statements are correct ?
A) sp³ hybridisation leads to tetrahy dral structure with bond angle 109° 28′
B) sp² hybridisation leads to trigonal planar structure with bond angle 120°
C) sp hybridisation leads to linear structure with bond angle 180°
D) All of these
Answer:
D) All of these

Question 58.
Ionic compounds are soluble in …………….
A) Benzene
B) Carbon tetra chloride
C) Water
D) Chloroform
Answer:
C) Water

Question 59.
The overlap present in following diagram is……………..

A) s – s
B) s – p
C) p – p
D) None of these
Answer:
B) s – p

Question 60.
Napthalene is soluble in …………….
A) Non – polar solvent
B) Kerosene
C) Water
D) Both A and B
Answer:
D) Both A and B

Question 61.
The bond present in HCl is …………….
A) Ionic
B) Covalent
C) Polar covalent
D) Dative
Answer:
A) Ionic

Question 62.
The following is not the characteristic of ionic compound
A) They are soluble in polar solvents like water
B) They have high melting and boiling points
C) Their solutions are bad conductors of electricity
D) They are crystalline solids
Answer:
C) Their solutions are bad conductors of electricity

Question 63.
The number of hybrid orbitals formed in sp³ hybridisation is ……………
A) 1
B) 2
C) 3
D) 4
Answer:
D) 4

Question 64.
Hybridisation is …………… of atomic orbitals.
A) exchange
B) interaction
C) intermixing
D) none of these
Answer:
C) intermixing

Question 65.
The inert gas element which do not have octet configuration in the outermost orbit is ……………
A) Ar
B) Kr
C) Rn
D) He
Answer:
D) He

CONCEPT – II: Electronic Theory of Valence: Ionic Bond

Question 66.
The ionic bond forms easily between which groups of elements ?
A) I-A and VII-A
B) II-A and V-A
C) I-A and V-A
D) II-A and VI-A
Answer:
A) I-A and VII-A

Question 67.
Which of the following elements form a unipositive ion ?
A) Mg
B) Al
C) Ca
D) Na
Answer:
D) Na

Question 68.
Which of the following anions has Ne electronic configuration?
A) Cl^–
B) O^2-
C) P^3-
D) Br^–
Answer:
B) O^2-

Question 69.
For the formation of ionic bond the electronegativity difference between atoms of two elements should be ………
A) greater than or equal to 1.9
B) less than or equal to 0.9
C) equal to 1.5
D) equal to 1
Answer:
A) greater than or equal to 1.9

Question 70.
Which one of the following is not an ionic compound ?
a) BeCl₂
b) BF₃
c) NH₃
d) CH₄
A) a, b only
B) b, c only
C) a, b, c, d
D) None
Answer:
C) a, b, c, d

Question 71.
Winch one of the following is wrong about NaCl crystal?
A) It does not conduct electricity in aqueous state
B) It is soluble in water
C) The coordination number of Cl^– in NaCl crystal is 6
D) It is face centered cubic crystal
Answer:
A) It does not conduct electricity in aqueous state

Question 72.
The coordination number of Na⁺ and Cl^– in NaCl is ………….
A) 4
B) 6
C) 8
D) 2
Answer:
B) 6

Question 73.
Generally the chemical bond formed between IA and VII A group elements …………….
A) Electrovalent bond
B) Covalent bond
C) Metallic bond
D) Dative bond
Answer:
A) Electrovalent bond

Question 74.
The valency of aluminium in AI²O₃ with respect to oxygen Is …….
A) 2
B) 3
C) 1
D) 1.5
Answer:
B) 3

Question 75.
The formula of the compound formed by A³⁺ and B^2- is ……………..
A) A₃ B₂
B) A₂ B₃
C) AB
D) A₂B
Answer:
B) A₂ B₃

Question 76.
The ratio of coordination number of Na⁺ and Cl^– in face centred cubic lattice crystal of NaCl is …………
A) 6 : 6
B) 6 :1
C) 1 : 6
D) 3 : 4
Answer:
A) 6 : 6

Question 77.
The coordination number of Na⁺ in NaCl is ……………….
A) 3
B) 4
C) 5
D) 6
Answer:
D) 6

Question 78.
Which of the following element lose three electrons to get octet in its outer shell?
A) Cs
B) Mg
C) O
D) Al
Answer:
D) Al

Question 79.
The element with negative charge having the electronic configuration 2,8,8 is ……………..
A) O^2-
B) Co^–
C) Al³⁺
D) P^2-
Answer:
B) Co^–

Question 80.
The condition for the formation of ionic bond is ……………….
A) Elements involved should of equal size
B) High electropositivity of atom
C) Atoms should have low ionization potential
D) Elements with high electronegativity difference
Answer:
D) Elements with high electronegativity difference

Question 81.
2, 8, 1 and 2, 8, 7 are electronic configurations of A and B elements combine to form a molecule. Its formula is ………….
A) AB
B) AB₂
C) A₂B
D) AB₃
Answer:
A) AB

Question 82.
Which of the following statements is not true ?
A) Valency of metal is its group number
B) Valency of non metal is equal to its group number
C) Noble gases are zero valent
D) Valency of non metal is 8 – group number
Answer:
B) Valency of non metal is equal to its group number

Question 83.
The formula of metal (M) chloride is MCl₃. Formula of its sulphate is
A) MS0₄
B) M₂(S0₄)₃
C) M(SO₄)₂
D) M(SO₄)₃
Answer:
B) M₂(S0₄)₃

CONCEPT – III: Covalent Bond

Question 84.
Which of the following is a covalent compound ?
A) NaCl
B) NH₃
C) MgCl₂
D) LiF
Answer:
B) NH₃

Question 85.
The number of covalent bonds in methane is …………….
A) 1
B) 2
C) 3
D) 4
Answer:
D) 4

Question 86.
The bond angle in BeF₂ molecule is
A) 109° 28’
B) 120°
C) 180°
D) 104° 31′
Answer:
C) 180°

Question 87.
The scientists proposed VSEPR theory are…………………
A) Sidgwick and Powell
B) Gillespie and Nyholm
C) Davy and Powell
D) Davy and Nyholm
Answer:
A) Sidgwick and Powell

Question 88.
The molecule having 104°31′ as bond angle is ………………
A) CH₄
B) H₂0
C) NH₃
D) C₂H₄
Answer:
B) H₂0

Question 89.
The molecule with two bond pairs in two covalent bonds around the nucleus of the central atom without any lone pair in the valance shell is
A) BeCl₂
B) BF₃
C) NH₃
D) CH₄
Answer:
A) BeCl₂

Question 90.
The molecules with decreasing order of
bond angles are
A) BF₃, NH₃, H₂O, CH₄
B) BeCl₂, BF₃, CH₄, NH₃
C) BCl₃, H₂O,NH₃,CH₄
D) BeCl₂, H₂O, NH₃, CH₄
Answer:
B) BeCl₂, BF₃, CH₄, NH₃

Question 91.
The bond angle in Berylium chloride is……………..
A) 120°
B) 110°
C) 180°
D) 104.31°
Answer:
C) 180°

Question 92.
The shape of H₂O molecule is ……………..
A) Linear
B) V-Shape
C) Trigphal bipyramidal
D) Trigonal pyramidal
Answer:
B) V-Shape

Question 93.
AH₂ is formed when element A reacts with hydrogen. Then the number of electrons in valence shell of A are generally
A) 2
B) 3
C) 5
D) 8
Answer:
A) 2

Question 94.
The valence shell of the central atom of a molecule has four bond pairs of electrons. Shape of the molecule is ……………..
A) Linear
B) Plane triangular
C) Square planar
D) Tetrahydral
Answer:
D) Tetrahydral

Question 95.
A molecule having 2 bond pairs and 2 lone pairs in the valence shell of its central atom.
A) H₂0
B) NH₃
C) CH₄
D) BF₃
Answer:
A) H₂0

CONCEPT – IV : VSEPRT

Question 96.
In a molecule AB₃ there is a lone pair in the valence shell of central atom. The shape of molecule.
A) Tetrahydral
B) Linear
C) Pyramidal
D) Plane triangular
Answer:
C) Pyramidal

Question 97.
The number of bond pairs and lone pair of electrons in O₂ molecules respectively.
A) 2, 2
B) 2,1
C) 4, 2
D) 2, 4
Answer:
D) 2, 4

Question 98.
Bond energy of HCl is
A) 410 KJ mol^-1
B) 432 KJ mol^-1
C) 460 KJ mol ^-1
D) 480 KJ mol^-1
Answer:
B) 432 KJ mol^-1

CONCEPT – V : Valence Bond Theory – Hybridisation

Question 99.
The 7t bond is not found in
A) C₂H₄
B) O₂
C) N₂
D) H₂O
Answer:
D) H₂O

Question 100.
The type of hybridization in CH₄ molecule is
A) sp
B) sp²
C) sp³
D) sp³d
Answer:
C) sp³

Question 101.
Ionic compounds are soluble in
A) kerosene
B) benzene
C) water
D) ether
Answer:
C) water

Question 102.
Which one of the following is not a polar molecule
A) H₂O
B) HCl
C) NH₃
D) BF₃
Answer:
D) BF₃

Question 103.
Ionic compounds are soluble in
A) non – polar solvents
B) ether
C) polar solvents
D) CCl₄
Answer:
C) polar solvents

Question 104.
The number of σ bonds in CH₄ molecule is …………….
A) 2
B) 3
C) 4
D) 1
Answer:
C) 4

Question 105.
Which of the following molecule has highest bond dissociation energy.
A) F – F
B) Cl-Cl
C) Br – Br
D) I – I
Answer:
B) Cl-Cl

Question 106.
The number of hybrid orbitals and atomic orbitals involved in BF3 respectively are ……………
A) 2, 2
B) 4, 4
C) 3/1
D) 3,3
Answer:
D) 3,3

Question 107.
The molecule involves sp3 hybridiza¬tion is ……………..
A) CH₄
B) NH₃
C) H₂O
D) All of these
Answer:
D) All of these

Question 108.
Choose the correct form of the diagram representing H₂ molecule

Answer:
D

Question 109.
The order of strength of overlapping is
A) s-s > p-p > s-p
B) s-p = s-s = p-p
C) s-p > s-s > p-p
D) p-p > s-p > s-s
Answer:
D) p-p > s-p > s-s

Question 110.
In NH₃ molecule, there are three
A) σ sp²– s bonds
B) σ sp³– s bonds
C) σ sp-p bonds
D) s-s bonds
Answer:
B) σ sp³– s bonds

Practice the AP 7th Class Social Bits with Answers Chapter 11 New Kings and Kingdoms on a regular basis so that you can attempt exams with utmost confidence.

AP State Syllabus 7th Class Social Bits 11th Lesson New Kings and Kingdoms with Answers

Choose the correct answer.

Question 1.
In India, many new dynasties emerged after the ………… century.
A) 5th
B) 6th
C) 7th
D) 12th
Answer:
C) 7th

Question 2.
Initially, Rashtrakutas were subordinates of
A) Chalukyas
B) Chauhans
C) Cholas
D) Sultans
Answer:
A) Chalukyas

Question 3.
This king performed ‘Hiranya- Garbha’
A) Amoghavarsha
B) Dhruva
C) Krishna
D) Dantidurga
Answer:
D) Dantidurga

Question 4.
Gwalior inscription was written in
A) Prakrit
B) Sanskrit
C) Brahmi
D) Vraj
Answer:
B) Sanskrit

Question 5.
A party in the tripartite struggle
A) Pala
B) Chola
C) Ghera
D) Pandya
Answer:
A) Pala

Question 6.
Gazini was the city in
A) Iran
B) Afghanisthan
C) Tajakisthan
D) Pakisthan
Answer:
B) Afghanistan

Question 7.
Chola ……….. images are considered amongst the finest in the world.
A) bronze
B) gold
C) silver
D) None of these
Answer:
A) bronze

Question 8.
Muttaraiyar held power in the delta.
A) Krishna
B) Kaveri
C) Godavari
D) Mahanadi
Answer:
B) Kaveri

Question 9.
……….. was Chola ruler.
A) Prola
B) Amoghavarsha
C) Raja Raja-I
D) Prataparudra
Answer:
C) Raja Raja-I

Question 10.
A group of villages, in the Chola dynasty, were known as
A) Nadu
B) Valanadu
C) Iqta
D) Shiq
Answer:
A) Nadu

Question 11.
The chief of Rashtrakutas who established their kingdom
A) Amoghavarsha
B) Dantidurga
C) Krishna
D) Dhruva
Answer:
B) Dantidurga

Question 12.
The inscription related to the achievements of Naga Bhata was found in ……………. in Madhya Pradesh.
A) Gwalior
B) Bhopal
C) Malva
D) None
Answer:
A) Gwalior

Question 13.
Revenue was also collected from ………….
A) Peasants
B) Artisans
C) Traders
D) Travellers
Answer:
C) Traders

Question 14.
One particularly prized area was the city of ………… in the Ganga valley.
A) Varanasi
B) Kanauj
C) Ahmedabad
D) Kolkata
Answer:
B) Kanauj

Question 15.
The Somanath temple in Gujarat was targetted by
A) Ghori
B) Ghazni
C) Timur
D) Changizkhan
Answer:
B) Ghazni

Question 16.
Chauhans ruled over the region around
A) Godavari
B) Vindhya and Satpura
C) Kaveri
D) Delhi and Ajmer
Answer:
D) Delhi and Ajmer

Question 17.
‘Muttaraiyars’ were the subordinates to the
A) Chalukyas
B) Cholas
C) Pallavas
D) Gurjaras
Answer:
C) Pallavas

Question 18.
……….. temples were centres of craft production.
A) Pallava
B) Chola
C) Rashtrakuta
D) Pandya
Answer:
B) Chola

Question 19.
Chahamanas, later known as the
A) Ghazni
B) Chauhans
C) Mohammad
D) None
Answer:
B) Chauhans

Question 20.
Kings expected from their Samanthas
A) to bring gifts for them
B) be present at their courts
C) provide them with military support
D) all the above
Answer:
D) all the above

Question 21.
Rashtrakutas were Samanthas to these
A) Cholas
B) Chalukyas
C) Pallavas
D) Vijayanagara kings
Answer:
B) Chalukyas

Question 22.
In the mid-eighth century, Danthi Durga, a Rashtrakuta Chief, overthrew his Chalukya overlord and performed a ritual called
A) Hiranya – Garbha
B) Sundaravadana
C) Deekshadakshatha
D) Rajasuya Yaga
Answer:
A) Hiranya – Garbha

Question 23.
………….. were brahmins who gave up their traditional professions and took up arms, successfully establishing kingdoms in Karnataka and Rajasthan respectively.
A) Kadamba Mayurasharman
B) Gurjara – Pratihara Harichandra
C) Both A & B
D) None
Answer:
C) Both A & B

Question 24.
Prashasti contain
A) that printed on the coin
B) details about the ruling family
C) the matter mentioned on the inscription
D) the words of the poet
Answer:
B) details about the ruling family

Question 25.
“The kings of Andhra, Saindhava, Vidarbha and Kalinga fell before him even as a prince” these words were told by ……………
A) Nagabhata
B) Vagbhata
C) Govinda Raju
D) Dhruva
Answer:
A) Nagabhata

Question 26.
Kings often rewarded …………. by grants of land.
A) KsHatriyas
B) Brahmins
C) Vysyas
D) Sudras
Answer:
B) Brahmins

Question 27.
The book tells us about the kings that ruled Kashmir
A) Raja Tarangini
B) Vikramanka Devacharitha
C) Ramabhyudaya
D) Megha Sandesam
Answer:
A) Raja Tarangini

Question 28.
The writer of Raja Tarangini.
A) Bilhana
B) Kalhana
C) Kalidas
D) Bana
Answer:
B) Kalhana

Question 29.
The kings have these titles more
A) Maharajadhi raja
B) Tribhuvana Chakravarthy
C) Both A & B
D) Rythu Bandhava
Answer:
C) Both A & B

Question 30.
The kings used the income for these which was in the form of tax
A) administration
B) constructing temples
C) constructing forts
D) all the above
Answer:
D) all the above

Question 31.
‘Tripartite Struggle’ means
A) For centuries, rulers belonging to the Gurjara – Pratihara, Rashtrakuta and Pala dynasties fought for control over Kanauj.
B) The fight of Pala, Pratihara and Gurjara kings on Muslium rulers.
C) The revolution of slaves, farmers and traders against the king.
D) All of the above
Answer:
A) For centuries, rulers belonging to the Gurjara – Pratihara, Rashtrakuta and Pala dynasties fought for control over Kanauj.

Question 32.
Afghanistan was ruled by ……….. from 997 A.D. to 1030 A.D.
A) Mahmud Ghori
B) Mahmud Ghazni
C) Qutubuddiri Aibak
D) Iltutmish
Answer:
B) Mahmud Ghazni

Question 33.
…………. entrusted a scholar named Al-Biruni to write an account of the sub-continent.
A) Mahmud Ghori
B) Mahmud Ghazni
C) Babur
D) Akbar
Answer:
B) Mahmud Ghazni

Question 34.
The writer of Kitab-al-Hind
A) Al-Biruni
B) Amir Khusru
C) Kafikhan
D) Darasuko
Answer:
A) Al-Biruni

Question 35.
The rulers of Delhi & Ajmer
A) Satavahanas
B) Gholas
C) Chalukyas
D) Chauhans
Answer:
D) Chauhans

Question 36.
The Chalukyas of Gujarat, Gadwals in ‘ Western Uttar Pradesh opposed these
A) Chauhans
B) Satavahanas
C) Cholas
D) Kakatiyas
Answer:
A) Chauhans

Question 37.
Prithviraj – III of Chouhan can defeat these in the first Tarain war in 1191.
A) Mahmud Ghazni
B) Md. Ghori
C) Babur
D) Qutubuddin Aibak
Answer:
B) Md. Ghori

Question 38.
This was defeated in the hands of Md. Ghori in Tarain war – II in 1192.
A) Pulakesi – II
B) Anandapal
C) Prithviraj
D) Trilochanapal
Answer:
C) Prithviraj

Question 39.
A small chief family called – Muttaraiyar got power over this Delta region.
A) Gang
B) Godavari
C) Krishna
D) Kaveri
Answer:
D) Kaveri

Question 40.
The Samanthas of Pallavas of Kanchipura
A) Cholas
B) Chalukyas
C) Rashtrakutas
D) Rajaputras
Answer:
A) Cholas

Question 41.
………….. who belonged to the ancient chiefly – family of the Cholas from Uraiyur, captured the delta from the Muttaraiyar in the middle of the ninth century.
A) Vijayalaya
B) Rajendra Chola
C) Raja Raja Chola
D) Kulothunga Chola
Answer:
A) Vijayalaya

Question 42.
Thanjavur temple was built by ……………
A) Rajendra Chola
B) Raja Raja Chola
C) Vijayalaya
D) Kulothunga Chola
Answer:
B) Raja Raja Chola

Question 43.
This person builds a temple for Goddess Nishumbhasudini.
A) Raja Raja Chola
B) Vijayalaya
C) Rajendra Chola
D) Kulothunga Chola
Answer:
B) Vijayalaya

Question 44.
The most powerful first Chola king
A) Raja Raja Chola -1
B) Raja Raja -11
C) Kulothunga Chola
D) Vijayalaya
Answer:
A) Raja Raja Chola -1

Question 45.
…………. raided the Ganga valley, Sri Lanka and countries of South East Asia, developing a navy for these expeditions.
A) Raja Raja Chola -1
B) Rajendra -1
C) Kulothunga Chola
D) All the above
Answer:
B) Rajendra -1

Question 46.
This person built the Brihadeshwara temple in Thanjavur.
A) Raja Raja Chola -1
B) Rajendra -1
C) Vijayalaya
D) Kulothunga Chola
Answer:
A) Raja Raja chola -1

Question 47.
The builder of Gangaikonda Cholapuram.
A) Raja Raja -1
B) Rajendra -1
C) Vijayalaya
D) Kulothunga Chola
Answer:
B) Rajendra -1

Question 48.
These copper statues are treated as beautiful in the world.
A) Pallavas
B) Cholas
C) Kakatiyas
D) Rashtrakutas
Answer:
B) Cholas

Question 49.
The reason behind many victories of Cholas
A) their strength
B) industrial development
C) adopting new developmental activities in agriculture
D) worked hard for better victories
Answer:
C) adopting new developmental activities in agriculture

Question 50.
The steps were taken by Cholas to store water
A) by constructing dams
B) by digging wells
C) by storing rainwater by constructing tanks
D) all the above
Answer:
D) all the above

Question 51.
The Pucca residences of farmers are called so
A) Ur
B) Village
C) Mugaddam
D) Nadu
Answer:
A) Ur

Question 52.
The group of ‘Urs’.
A) Nadu
B) Mandal
C) Uraiyur
D) Valanadu
Answer:
A) Nadu

Question 53.
The Chola kings gave some rich landowners titles like ………….
A) Muvendavelan
B) Araiyar
C) Both A & B
D) None
Answer:
C) Both A & B

Question 54.
The land belonged to non-brahmin farmers
A) Vellanvagai
B) Brahmadeya
C) Shalabhoga
D) Devadana
Answer:
A) Vellanvagai

Question 55.
The land that was gifted to Brahmins
A) Vellanvagai
B) Brahmadaya
C) Shalabhoga
D) Devadana
Answer:
B) Brahmadaya

Question 56.
The land that was used for school maintenance
A) Vellanvagai
B) Brahmadaya
C) Shalabhoga
D) Devadana
Answer:
C) Shalabhoga

Question 57.
The land that was donated to Jain institutions
A) Shalabhoga
B) Devadana
C) Brahmadaya
D) Pallichhandam
Answer:
D) Pallichhandam

Question 58.
These trade committees participated in administrative affairs.
A) Nagaram
B) Ur
C) Uriam
D) Tomara
Answer:
A) Nagaram

Question 59.
The Uttaramerur inscription is in this district.
A) Tanjore
B) Uraiyur
C) Chingelput
D) Kanchi
Answer:
C) Chingelput

Question 60.
The Tamil Periyapuranam of 12th century tells us about these
A) common people
B) kings
C) craft persons
D) vysyas
Answer:
A) common people

Question 61.
On the outskirts of Adanur was a small hamlet of …………… studded with small huts under old thatches and inhabited by agrarian labourers engaged in menial occupations.
A) Higher caste people
B) Pulaiyas
C) Govindas
D) Mers
Answer:
B) Pulaiyas

Question 62.
Rashtrakutas overthrew Chalukyas.
Q. Who was the famous Rashtrakuta ruler?
A) Mayura Sharma
B) Dantidurga
C) Nagabhata
D) Harichanda
Answer:
B) Dantidurga

Question 63.
Chahamanas – later known as Chauhans, ruled over the region around Delhi and Ajmir.
Q. The name of the Chauhan king who defeated Md. Ghori
A) Prithviraj – I
B) Prithviraj – II
C) Prithviraj – III
D) Prithviraj
Answer:
C) Prithviraj – III

Question 64.
The Radamba Mayurasharman, the Gurjara Pratihara Harichandra were famous Brahmins they established the new kingdoms also.
Q. The Guijara Pratihara belongs to the following state
A) Andhra Pradesh
B) Rajasthan
C) Karnataka
D) Arunachal Pradesh
Answer:
B) Rajasthan

Question 65.
Nagabhatta: Pratihara:: Danti Durga: ……………
A) Chauhans
B) Lodi’s
C) Rashtrakutas
D) Vijayanagara’s
Nagabhatta defeated the kings of Bengal, Gujarata & Madhya Pradesh.
Answer:
C) Rashtrakutas

Question 66.
Find the correct statement.
A. Nagabhatta defeated the Sri Krishnadevaraya.
B. One prashasti written in Sanskrit was about Nagabhatta.
A) A only
B) B only
C) Both A & B
D) None of these
Answer:
B) B only

Question 67.
Find the correct statement about Cholas.
1. So many steps were taken by Cholas to store water.
2. The Chola kings gave titles to some rich landowners.
A) 1 only
B) 2 only
C) Both 1 & 2
D) None of these
Answer:
C) Both 1 & 2

Read the table below and choose the correct answer for 68 & 69 Questions. Mahmud Ghazni 997 A.D – 1030 A.D Prithviraja III 1168 A.D – 1192 A.D Sri Krishnadevaraya 1509 A.D – 1529 A.D

Question 68.
Name of the Ruler who belongs to Tuluva dynasty.
A) Prithviraj
B) Sri Krishnadevaraya
C) Ghazni
D) Ghori
Answer:
B) Sri Krishnadevaraya

Question 69.
Who is Chahamana ruler among the following?
A) Ghori
B) Ghazni
C) Pruthviraj
D) Sri Krishnadevaraya
Answer:
C) Pruthviraj

Question 70.

The map shows the kingdom of
A) Cholas
B) Rashtrakutas
C) Palas
D) Kalingas
Answer:
A) Cholas

Question 71.
Kanchi was under the control of
A) Cholas
B) Chalukyas
C) Prathiharas
D) None of the above
Answer:
A) Cholas

Question 72.
The capital of Pandyas
A) Kanchi
B) Madurai
C) Vengi
D) Badami
Answer:
B) Madurai

Question 73.
Western Chalukyas are also called
A) Vengi Chalukyas
B) Yadavas
C) Badami Chalukyas
D) None
Answer:
C) Badami Chalukyas

Question 74.
The town of Thanjavur was built by
A) Vijayalaya Chola
B) Raja Raja Chola
C) Rajendra Chola
D) None
Answer:
A) Vijayalaya Chola

Question 75.
Who was the most powerful ruler of the Chola dynasty?
A) Raja Raja I
B) Rajendra
C) Bhuvana
D) None
Answer:
A) Raja Raja I

Question 76.
Chola temples were recognised as centres of
A) Earning centres
B) Recreation centres
C) Museums
D) Craft production
Answer:
D) Craft production

Question 77.
The sculpture is shown in the picture
A) Ganga
B) A Chola bronze sculpture
C) Wall relief from Ellora
D) None
Answer:
B) A Chola bronze sculpture

Question 78.
Prashastis means
A) Describe the donations
B) Describe the achievements of rulers
C) Weapons used
D) The details of kings families
Answer:
D) The details of kings families

Question 79.
Which of the following kings built the town of Thanjavur?
A) Rajaraja -1
B) Rajendra -1
C) Vijayalaya
D) Narasimha Varma
Answer:
C) Vijayalaya

Question 80.
Which of the following is the correct chronological order of the dynasties which ruled different regions of India during 7 – 12 AD?
A) Rajaputra – Kakatiya – Vijayanagara
B) Vijayanagara – Rajaputra – Kakatiya
C) Kakatiya – Vijayanagara – Rajaputra
D) Vijayanagara – Kakatiya – Rajaputra
Answer:
A) Rajaputra – Kakatiya – Vijayanagara

Question 81.
Which of these buildings can help us understand better the Chola period in South India?

Answer:
B)

Question 82.
These images are most distinctive during the Cholas period
A) Stone
B) Copper
C) Bronze
D) Iron
Answer:
C) Bronze

Question 83.
Who is important among Rastrakutas?
A) Ajatasatru
B) Danthidurga
C) Dharmapala
D) Ganapathideva
Answer:
B) Danthidurga

Practice the AP 7th Class Social Bits with Answers Chapter 10 Importance of Transport System on a regular basis so that you can attempt exams with utmost confidence.

AP State Syllabus 7th Class Social Bits 10th Lesson Importance of Transport System with Answers

Choose the correct answer.

Question 1.
Highways built across different ……….. in the country.
A) States
B) Towns
C) Villages
D) Tribal areas
Answer:
A) States

Question 2.
………….. are responsible for village roads.
A) Mandal Parishats
B) Panchayats
C) Z.Ps
D) State government
Answer:
B) Panchayats

Question 3.
………… share of travelers in India use trains.
A) 2/5
B) 3/5
C) 1/5
D) 2/7
Answer:
C) 1/5

Question 4.
There are …………. airports in A.P.
A) 2
B) 3
C) 5
D) 6
Answer:
D) 6

Question 5.
……….. are major trading centers.
A) Port cities
B) Villages
C) Historical cities
D) Capitals
Answer:
A) Port cities

Question 6.
……….. are mostly transported by ships.
A) People
B) Goods
C) Animals
D) Plantations
Answer:
B) Goods

Question 7.
Motorcycles and ………. are used in a big way.
A) cycles
B) lorries
C) cars
D) trucks
Answer:
C) cars

Question 8.
Coal is transported through ………… transport.
A) Road
B) Rail
C) Both A & B
D) Air
Answer:
C) Both A & B

Question 9.
………… are more crucial in foreign trade.
A) Airports
B) Main cities
C) Seaports
D) State capitals
Answer:
C) Seaports

Question 10.
………… is a domestic airport.
A) Puttaparthi
B) Dum Dum
C) Santha Cruz
D) Rajiv Gandhi
Answer:
A) Puttaparthi

Question 11.
The paper industry uses ………….. to bring their raw material.
A) Trucks
B) Vans
C) Lorries
D) Trains
Answer:
C) Lorries

Question 12.
The ………….. maintain accounts, repair buses or work in bus depots.
A) Politicians
B) Farmers
C) Lawyers
D) Employees
Answer:
D) Employees

Question 13.
Construction and maintenance of roads are mostly under this ownership in India.
A) Public
B) Private individuals
C) Public, Private individuals
D) Foreigners Collaboration
Answer:
A) Public

Question 14.
These are connected cities in different states in our country
A) State Highways
B) National Highways
C) Village Roads
D) Z.P. road
Answer:
B) National Highways

Question 15.
The NH-7 runs through these states
A) U.P, M.P.
B) Maharashtra, Telangana
C) A.P, Karnataka, Tamilnadu
D) All the above
Answer:
D) All the above

Question 16.
This government maintains the roads which connect small towns with districts
A) central government
B) state government
C) Z.P.s
D) local governments
Answer:
B) state government

Question 17.
…………. are responsible for the roads made of gravel and urban roads.
A) Gram Panchayats, Corporations, Municipalities
B) Central government, state governments
C) Central, state, and local governments
D) None
Answer:
A) Gram Panchayats, Corporations, Municipalities

Question 18.
There are ………… ports in Andhra Pradesh.
A) 20
B) 15
C) 18
D) 16
Answer:
B) 15

Question 19.
The railways are mainly used for transport these
A) coal, raw iron
B) fertilizers, cement
C) food grains
D) all the above
Answer:
D) all the above

Question 20.
This state has no coastal line or shipyards
A) Maharashtra
B) Andhra Pradesh
C) Telangana
D) Gujarat
Answer:
C) Telangana

Question 21.
The biggest shipyard out of 15 shipyards in Andhra Pradesh.
A) Kakinada
B) Visakhapatnam
C) Nijampatnam
D) Kalingapatnam
Answer:
B) Visakhapatnam

Question 22.
International trade happens through these
A) roadways
B) railways
C) waterways
D) airways
Answer:
C) waterways

Question 23.
The ways used by more in Andhra Pradesh.
A) roadways
B) railways
C) waterways
D) airways
Answer:
A) roadways

Question 24.
This share of villages has transport facilities in 2001 in Andhra Pradesh.
A) 1/2nd
B) 2/3rd
C) 3/4th
D) 4/5th
Answer:
C) 3/4th

Question 25.
The farmers should carry their produce to this place
A) Rythu Bazar
B) Market
C) Resort
D) Park
Answer:
A) Rythu Bazar

Question 26.
The no. of buses in APSRTC run by 1,20,000 employees
A) 8,000
B) 9,000
C) 20,000
D) 11,000
Answer:
C) 20,000

Question 27.
The share of two-wheelers on Andhra Pradesh roads out of one crore vehicles.
A) 1/2nd
B) 2/3 rd.
C) 3/4 th
D) 4/5th
Answer:
C) 3/4 th

Question 28.
The transport system is dependent on these
A) Availability of transport facilities
B) Transport charges
C) Both A & B
D) Gravity
Answer:
C) Both A & B

Question 29.
The important means of transport to far off countries, either for human beings or for goods, from centuries together
A) Aeroplanes
B) Trains
C) Buses
D) Ships
Answer:
D) Ships

Question 30.
The people cannot move from one place to another place at this time.
A) when transport cost is more
B) when transport cost is less
C) when the people receive high incomes
D) none
Answer:
A) when transport cost is more

Question 31.
The persons who occupy pavements for business
A) Pedestrians
B) Vendors
C) Vehicle drivers
D) Common people
Answer:
B) Vendors

Question 32.
The no. of people living in, six big cities in India increased by two times during 1981 to 2001 whereas the no. of motor vehicles went up by ………….. times during the same period.
A) 7
B) 6
C) 5
D) 8
Answer:
D) 8

Question 33.
The issues which show more effect on the families of low income
A) road accidents
B) deaths
C) wounds
D) all the above
Answer:
D) all the above

Question 34.
In the first week of every year, the Road Transport departments all over the country celebrate
A) Library week
B) Rail week
C) Road Safety Week
D) None
Answer:
C) Road Safety Week

Question 35.
Whatever may be the means of transport one should follow
A) Traffic rules
B) Fundamental duties
C) Directive principles
D) None
Answer:
A) Traffic rules

Question 36.

What does the picture show?
A) Airport
B) Seaport
C) Island
D) Peninsula
Answer:
B) Seaport

Question 37.

What does the picture show?
A) Airport
B) Seaport
C) Factory
D) Lighthouse
Answer:
A) Airport

Question 38.
One has to prefer public transport system because
A) Over pollution due to carrying more people
B) They move long distances
C) Cost is more
D) They carry more people so that using individual vehicles reduce leading to less pollution
Answer:
D) They carry more people so that using individual vehicles reduce leading to less pollution

Question 39.
Following traffic rules help
A) To avoid accidents
B) To avoid pollution
C) To carry less luggage
D) To carry more luggage
Answer:
A) To avoid accidents

Question 40.
Find the correct statement.
1. Horse cart is a manual.
2. Bus is mechanical and manual.
A) 1 only
B) 2 only
C) Both 1 & 2
D) None
Answer:
C) Both 1 & 2

Question 41.
Match the following:
A                                                       B
1. APSRTC                    [ ]        A) Road Transport
2. National Highways  [ ]        B) BRDB
3. State Highways        [ ]        C) Central Government
4. Border roads            [ ]        D) State Government
A) 1 – A, 2 – B, 3 – C, 4 – D
B) 1 – B, 2 – C, 3 – D, 4 – A
C) 1 – A, 2 – C, 3 – D, 4 – B
D) 1 – C, 2 – D, 3 – B, 4 – A
Answer:
C) 1 – A, 2 – C, 3 – D, 4 – B

Question 42.
Find the correct statement.
1. Road Transport provides door-to-door delivery.
2. Railways constructions are very cheap.
A) 1 only
B) 2 only
C) Both 1 & 2
D) None
Answer:
A) 1 only

Question 43.
If you want to travel fastly from Vijayawada to Delhi, you opted
A) Bus
B) Train
C) Aeroplane
D) Car
Answer:
C) Aeroplane

Question 44.
Most of the accidents are occurring in
A) Roadways
B) Railways
C) Airways
D) Waterways
Answer:
A) Roadways

Question 45.
Vehicles are registered at
A) Collectorate Office
B) R.T.O. Office
C) Village Office
D) Transport Minister Office
Answer:
B) R.T.O. Office

Question 46.
Which of the following we should follow when we are riding on a motorcycle?
A) Overtaking the vehicles
B) Drunk and drive the vehicles
C) Wearing a helmet
D) To run the vehicles on footpath
Answer:
C) Wearing a helmet

Question 47.
Road safety week
A) First week of January
B) Last week of January
C) the First week of December
D) Last week of December
Answer:
A) First week of January

Practice the AP 10th Class Physical Science Bits with Answers Chapter 10 Electromagnetism on a regular basis so that you can attempt exams with utmost confidence.

AP State Syllabus 10th Class Physical Science Bits 10th Lesson Electromagnetism with Answers

Question 1.
The unit of magnetic field strength is
A) Oersted
B) Ampere
C) Coloumb
D) Faraday
Answer:
A) Oersted

Question 2.
The magnetic field around a magnet is
A) one dimensional
B) two dimensional
C) three dimensional
D) none
Answer:
C) three dimensional

Question 3.
Which of the following statement is true ?
A) A magnetic field is characterized by strength and direction.
B) The direction of the magnetic field can be determined by using a compass.
C) The strength of the magnetic field varies with distance from the bar magnet.
D) all of the above
Answer:
D) all of the above

Question 4.
Statement X : The magnetic field is strong when lines are crowded.
StatementY : The magnetic field is weak when lines are spaced apart.
A) Both statements are true
B) Both statements are false
C) X is true, Y is false
D) X is false, Y is true
Answer:
A) Both statements are true

Question 5.
Statement X : If the field strength or direction of field change from point to point then the field is said to be non-uniform.
StatementY : If both field strength and direction of field are constant throughout the field then the field, is said to be uniform.
A) Both statements are true
B) Both statements are false
C) X is true, Y is false
D) X is false, Y is true
Answer:
A) Both statements are true

Question 6.
Which of the following statements is correct ?
A) The magnetic field produced by a bar magnet-is non-uniform.
B) The magnetic field produced by a bar magnet is uniform.
C) Earth’s magnetic field is uniform.
D) Earth’s magnetic field is non¬uniform.
Answer:
C) Earth’s magnetic field is uniform.

Question 7.
The number of lines passing through the plane of area perpendicular to the field is called
A) magnetic field
B) magnetic flux
C) magnetic flux density
D) none
Answer:
B) magnetic flux

Question 8.
The magnetic flux passing through unit area taken perpendicular to the field is called …………………
A) magnetic flux
B) magnetic flux density
C) magnetic field induction
D) both B and C
Answer:
D) both B and C

Question 9.
The ratio of magnetic flux passing through a plane perpendicular to the field and area of the plane is called …………….
A) magnetic flux
B) magnetic flux density
C) magnetic field induction
D) both B and C
Answer:
D) both B and C

Question 10.
The S.I unit of magnetic flux is ………………..
A) Weber
B) Weber/meter2
C) Tesla
D) Both B and C
Answer:
A) Weber

Question 11.
The S.I unit of magnetic flux density is ………………….
A) Weber
B) Weber/meter²
C) Telsa
D) Both B and C
Answer:
D) Both B and C

Question 12.
Statement X : Magnetic flux represents the number of lines passing through the plane in the field.
Statement Y : The magnetic flux depends on the orientation of the plane in the field.
A) Both statements are true
B) Both statements are false
C) X is true, Y is false.
D) X is false, Y is true
Answer:
A) Both statements are true

Question 13.
The general formula of the flux for any orientation of the plane taken in the field
A) Φ = BA
B) Φ = BA cos θ
C) Φ = BA sin θ
D) zero
Answer:
B) Φ = BA cos θ

Question 14.
The flux through the plane taken perpendicular to the field is……………….
A) Φ = BA
A) Φ = BA
B) Φ = BA cos θ
C) Φ = BA sin θ
D) zero
Answer:
A) Φ = BA

Question 15.
The flux through the plane taken parallel to the field is……………….
A) Φ = BA
A) Φ = BA
B) Φ = BA cos θ
C) Φ = BA sin θ
D) zero
Answer:
D) zero

Question 16.
The scientist who discovered the magnetic effect of current:
A) Oersted
B) Faraday
C) Ampere
D) Fleming
Answer:
A) Oersted

Question 17.
The shape of the magnetic field lines around a straight current carrying conductor are …………….
A) parallel lines
B) concentric circles
C) both A and B
D) none
Answer:
B) concentric circles

Question 18.
Statement X: When electric current flows vertically upwards the direction of the magnetic field lines produced by a straight conductor are in anti clock wise direction.
Statement Y : When electric current flows vertically down-wards the direction of the magnetic field lines produced by a straight conductor are in clock wise direction.
A) Both statements are true
B) Both statements are false
C) X is true, Y is false
D) X is false, Y is true
Answer:
A) Both statements are true

Question 19.
Which of the following diagram represents the direction of magnetic field lines produced by a straight conductor when an electric currentflows in up ward direction i.e out of the page?

Answer:
D

Question 20.
Statement X:
The direction of the magnetic field due to circular coil points to wards you when the current in the coil is in anti clock wise direction.
Statement Y : The direction of the magnetic field due to circular coil points away from you when the current in the coil is . clock wise direction.
A) Both statements are true
B) Both statements are false
C) X is true, Y is false
D) X is false, Y is true
Answer:
A) Both statements are true

Question 21.
Which of the following statements is correct ?
A) A current carrying circular wire behaves like a thin disc magnet
B) If the current flows around the face of a circular coil in the clock-wise direction that face of the circular wire will be south pole.
C) If the current flows around the face of a circular coil in the anti clock-wise direction that face of the circular wire will be north pole.
D) All of the above
Answer:
D) All of the above

Question 22.
The direction of current flowing in a coil is shown in figure. What type of magnetic pole is formed at the face?

A) North pole
B) South pole
C) East pole
D) West pole
Answer:
A) North pole

Question 23.
Which of the following statements is, are correct?
A) A long wire wound in a closely packed helix is called solenoid.
B) The magnetic field lines set up by solenoid resemble those of a bar magnet.
C) One end of the solenoid behaves like a north pole and other behaves like a south pole when electric current flows through it.
D) All of the above
Answer:
D) All of the above

Question 24.
Statement X : The direction of the field’ outside the solenoid is from north to south.
Statement Y : The direction of the field lines inside the solenoid is from south to north.
A) Both statements are true
B) Both statements are false
C) X is true, Y is false
D) X is false, Y is true
Answer:
A) Both statements are true

Question 25.
Statement X : The strength of the magnetic field inside a solenoid is the same at all the points.
Statement Y : The strength of the magnetic field is the same at all points outside the solenoid.
A) Both statements are true
B) Both statements are false
C) X is true, Y is false
D) X is false, Y is true
Answer:
C) X is true, Y is false

Question 26.
Which of the following statements is aretrue ?
A) The direction of the magnetic field lines due to straight current carrying wire can be determined by using right hand rule.
B) The direction of the magnetic field lines due to circular current carrying wire can be determined by using right hand rule.
C) The direction of the magnetic field lines due to current carrying solenoid can be determined by using right hand rule.
D) All of the above
Answer:
D) All of the above

Question 27.
For the solenoid given in the diagram name the polarities A and B of a solenoid when the current flows in the direction
shown.

A) North and south
B) South and north
C) East and west
D) West and east
Answer:
A) North and south

Question 28.
Tesla is the S.I unit for ………………….
A) magnetic flux
B) magnetic flux density
C) magnetic pole strength
D) induction emf
Answer:
B) magnetic flux density

Question 29.
The direction of lines of force in the inner side of a solenoid is ………………….
A) North to south
B) South to north
C) East to west
D) West to east
Answer:
B) South to north

Question 30.
The magnetic field is called uniform if
A) strength and direction of magnetic field are changing
B) strength and direction of magnetic field are constant
C) only magnetic field strength is constant
D) only direction of magnetic field is constant
Answer:
B) strength and direction of magnetic field are constant

Question 31.
Magnetic flux density (B) = ……………..
A) Area/Magnetic flux
B) Length/Magnetic flux
C) Magnetic flux/Length
D) Magnetic flux/ Area
Answer:
D) Magnetic flux/ Area

Question 32.
If B is the magnetic flux density and A is the area of the plane then the magnetic flux is given by
A) AB
B) B/A
C) A/B
D) A²B
Answer:
A) AB

Question 33.
A current carrying circular coil has ‘n’ turns. The magnetic field produced in the entire coil is
A) 1/n times as large as that produced by a single turn
B) same as that produced by a single turn
C) ‘n’ times as large as that produced by a single turn
D) zero
Answer:
C) ‘n’ times as large as that produced by a single turn

Question 34.
The first scientist who identified the relationship between electricity and magnetism is ………………..
A) Oersted
B) Ampere
C) Lenz
D) Ohm
Answer:
A) Oersted

Question 35.
1 tesla = ………………..
A) 1 Weber
B) 1 Weber/meter²
C) 1 Watt/meter²
D) 1 Coloumb
Answer:
B) 1 Weber/meter²

CONCEPT – II: Magnetic Force on Moving Charge and Current Carrying Wire – Electric Motor

Question 36.
The equation for magnetic force on charge q when there is an angle “9” between the direction of field B and
velocity V is ………………….
A) F = Bqv
B) F = Bqv sinθ
C) F = Bqv cosθ
D) zero
Answer:
B) F = Bqv sinθ

Question 37.
The equation for magnetic force on charge ‘q’ moving perpendicular to the magnetic field is
A) F = Bqv
B) F = Bqv sinθ
C) F = Bqv cosθ
D) zero
Answer:
A) F = Bqv

Question 38.
The magnetic force on the charge ‘q’ moving parallel to the magnetic field is ……………………
A) F = Bqv
B) F = Bqv sinθ
C) F = Bqv cosθ
D) zero
Answer:
D) zero

Question 39.
Statement X : The picture on the TV screen is distorted when you bring a bar magnet near the TV screen as the magnetic field exerts a force on the moving charges.
Statement Y : When you bring a bar magnet away from the TV screen you will get a clear picture on the screen because the force exerted by the magnet on the charges disapp-ear.
A) Both statements are true
B) Both statements are false
C) X is true, Y is false
D) X is false, Y is true
Answer:
A) Both statements are true

Question 40.
The equation for magnetic force on a current carrying wire of length T/ which makes an angle ‘θ’ with the magnetic
field is ……………….
A) F = BIL
B) F = BIL sinθ
C) F = BIL cosθ
D) zero
Answer:
B) F = BIL sinθ

Question 41.
The equation for magnetic force on a current carrying wire of length T/ which is placed perpendicular to a magnetic field is ………………….
A) F = BIL
B) F = BIL sinθ
C) F = BIL cosθ
D) zero
Answer:
A) F = BIL

Question 42.
The magnetic force on a current carrying wire which is placed along a magnetic field is …………..
A) F = BIL
B) F = BIL sinθ
C) F = BIL cosθ
D) zero
Answer:
D) zero

Question 43.
In which way does the wire move which is placed perpendicular to the magnetic field and the direction of current is Shown in figure? [The direction of the magnetic field is into the page.i.e x]

Answer:
B

Question 44.
A current carrying wire of length L is placed perpendicular to a uniform magnetic field B. Then the force acting on the wire with current is ……………………..
A) 0
B) ILB
C) 2ILB
D) ILB/2
Answer:
B) ILB

Question 45.
The charge is moving alongthe direction of magnetic field. Then force acting on it is ………………..
A) 0
B) Bqv sinθ
C) Bqv
D) BIL
Answer:
A) 0

Question 46.
Name the device which is used to reverse the direction of current in the coil of a
A) commutator
B) Split rings
C) both A and B
D) none
Answer:
C) both A and B

Question 47.
In an electric motor which of the following rotates with the coil ?
A) commutator
B) brush
C) both A and B
D) none
Answer:
A) commutator

Question 48.
In an electric motor which of the following remains fixed with the coil ?
A) commutator
B) brush
C) both A and B
D) none
Answer:
B) brush

Question 49.
In an electric motor the direction of current in the coil charge once in each ………………
A) two rotations
B) one rotation
C) half – rotation
D) one – fourth – rotation
Answer:
C) half – rotation

Question 50.
Statement X : A current carrying coil rotates when it is kept in a uniform magnetic field.
Statement Y: Net force on a current carrying coil when it is kept in a uniform magnetic field is zero.
A) Both statements are true
B) Both statements are false
C) X is true, Y is false
D) X is false, Y is true
Answer:
A) Both statements are true

Question 51.
Which of the following statements is correct.
A) The direction of rotation of motor will be reversed when the direction of the current is reversed.
B) The direction of the rotation of motor will be reversed when the direction of the magnetic field is reversed.
C) The direction of the rotation of motor will remain unchanged when both current and magnetic field are reversed simultaneously.
D) AH of the above
Answer:
D) AH of the above

Question 52.
Statement X : When a current carrying wire is kept perpendi-cular to the magnetic field it experiences a force.
Statement Y : When a current carrying wire is kept along the direction (or) against the direction of magnetic field it experiences no force.
A) Both statements are true
B) Both statements are false
C) X is true, Y is false
D) X is false, Y is true
Answer:
A) Both statements are true

Question 53.
As shown in the figure a positive charge ‘q’ moves at a speed ‘v’ in a constant uniform magnetic field directed into the page. The direction of velocity is perpendicular to the direction of magnetic field. The direction of magnetic force on the charge ‘q’ is …………………
A) due north
B) due south
C) due west
D) due east

Answer:
A) due north

Question 54.
Which .of the following equation is correct in electro magnetism ?
A) F = [latex]\frac{\mathrm{qv}}{\mathrm{B} \sin \theta}[/latex]
B) F = [latex]\frac{\mathrm{qB} \sin \theta}{\mathrm{v}}[/latex]
C) F = qvBsinθ
D) F = qvBcosθ
Answer:
C) F = qvBsinθ

Question 55.
In which of the following electric energy is converted into mechanical energy ?
A) Galvanometer
B) Ammeter
C) Generator
D) Electric motor
Answer:
D) Electric motor

Question 56.
A particle of charge ‘q’ and rhass’m’ is moving with a speed V perpendicular to the magnetic field of induction B. The radius of the circular path moving by the particle is ………………….
A) mvB/q
B) mlvq/B
C) mB/vq
D) mv/Bq
Answer:
D) mv/Bq

Question 57.
If the angle between moving charge and magnetic field is 0, the magnetic force acting on the charge is given by …………….
A) qvB [latex]\frac{1}{\operatorname{cosec} \theta}[/latex]
B) qvBcosθ
C) qvB. [latex]\frac{1}{\sin \theta}[/latex]
D) qvB tanθ
Answer:
A) qvB [latex]\frac{1}{\operatorname{cosec} \theta}[/latex]

Question 58.
No force works on the conductor carrying electric current when it is kept ………………….
A) away from magnetic field
B) in the magnetic field
C) perpendicular to magnetic field
D) parallel to magnetic field
Answer:
D) parallel to magnetic field

Question 59.
A charge ‘q’ is moving with a velocity ‘v’ in magnetic field of induction B. If the magnetic force acting on charge ‘q’ is equal to qvB, then ………………….
A) ‘q’ is moving parallel to B
B) ‘q’ is moving perpendicular to B
C) ‘q’ is moving at an angle of 45° to B
D) ‘q’ is stationary
Answer:
B) ‘q’ is moving perpendicular to B

Question 60.
If we stretch the thumb, index finger and middle finger perpendicular to each other in the right hand rule with regard to positive charge then these three fingers indicate the following direction respectively (when direction force is ‘F’, direction of velocity of charge is V, direction of field is ‘B’)
A) F, V, B
B) V, F, B
C) B,V,F
D) F, B, V
Answer:
A) F, V, B

CONCEPT – III: Electro – Magnetic Induction

Question 61.
The phenomenon of electro magnetic induction is ………………….
A) the process of charging a body.
B) the process of generating magnetic field due to current passing through a coil
C) producing induced current in a coil due to relative motion between a magnet and a coil
D) the process of rotating a coil of electic motor
Answer:
C) producing induced current in a coil due to relative motion between a magnet and a coil

Question 62.
Statement X : Whenever there is a continuous charge of magnetic flux linked with a closed coil a current is generated in the coil. This is Faraday’s law of electic magnetic induction.
Statement Y : The induced emf generated in a closed loop is equal to the rate of charge of magnetic flux passing through it. This is Faraday’s law of electro magnetic indue – tion.
A) Both statements are true
B) Both statements are false
C) X is true, Y is false
D) X is false, Y is true
Answer:
A) Both statements are true

Question 63.
The equation of Faraday’s law of electro magnetic induction is
A) G = Δt / ΔΦ
B) e = ΔΦ/Δt
C) e = ΔΦx Δt
D) none
Answer:
B) e = ΔΦ/Δt

Question 64.
Faraday’s law of induction is the consequence of …………….
A) law of conservation of mass
B) law of conservation of charge
C) law of conservation of energy
D) none
Answer:
C) law of conservation of energy

Question 65.
Statement X : Lenz’s law states “the induced current will appear in such a direction that it opposes the charges in the flux in the coil.”
Statement Y : Lenz’s law gives the direction of induced curren in a coil
A) Both statements are true
B) Both statements are false
C) X is true, Y is false
D) X is false, Y is true
Answer:
A) Both statements are true

Question 66.
Find the length of the conductor which is moving with a speed of 10 m/sin the direction perpendicular to the direction of magnetic field of induction 0.8T, if it induces an em/of 8V between the ends of the conductor.
A) 10 m
B) 1 m
C) 100 m
D) 0.8 m
Answer:
B) 1 m

Question 67.
Which of the following works on the rule of Faraday’s law of electro -magnetic induction ?
A) Tape recorder
B) ATM machine
C) Induction stove
D) All
Answer:
D) All

Question 68.
The frequency of direct current is …………………
A) 0 Hz
B) 50 Hz
C) 60 Hz
D) 100 Hz
Answer:
A) 0 Hz

Question 69.
The frequency of alternating current (AC) supply in India is ……………..
A) 0Hz
B) 50 Hz
C) 60 Hz
D) 100 Hz
Answer:
B) 50 Hz

Question 70.
Statement X : Induced emf is genera¬ted due to relative motion between the magnet and the coil
Statement Y : Induced emf is genera¬ted due to continuous charge of magnetic flux linked with a closed coil (AS 2) ( )
A) Both statements are true
B) Both statements are false
C) X is true, Y is false
D) X is false, Y is true
Answer:
A) Both statements are true

Question 71.
The essential difference between an AC generator and a DC generator is that
A) AC generator has an elector magnet while a DC generator has permanent magnet
B) DC generator will generate a higher voltage
C) AC generator has slip rings while the DC generator has a commutator.
D) AC generator has commutator while the DC generator has slip rings
Answer:
C) AC generator has slip rings while the DC generator has a commutator.

Question 72.
Statement X : A generator works on the principle of electro megnetic induction.
Statement Y : A motor works on the principle of electro magnetic induction.
A) Both statements are true
B) Both statements are false
C) X is true, Y is false
D) X is false, Y is true
Answer:
C) X is true, Y is false

Question 73.
The given figure represents .
A) DC
B) AC
C) both A and B
D) none

Answer:
A) DC

Question 74.
The given figure represents
A) DC
B) AC
C) both A and B
D) none

Answer:
B) AC

Question 75.
Which of the following does not work on electro magnetic induction principle
A) Transformer
B) Tape recorder
C) ATM card
D) None
Answer:
D) None

Question 76.
Whenever there is continuous changes of magnetic flux linked with closed coil a current is generated in coil. This is ……………..
A) Lenz’s law
B) Ampere’s law
C) Faraday’s law
D) Ohm’s law
Answer:
C) Faraday’s law

Question 77.
A conductor of length of 1m moving with velocity ‘v’ perpendicular to the magnetic field of strength 10 Tesla induces an e.m.f of 10 volts. Then v = ………….. m/s
A) 100
B) 10
C) 1
D) 0.1
Answer:
C) 1

Question 78.
The peak value of alternative current is 2 ampere. The r.m.s value of current is ………….. ampere.

Answer:
B

Question 79.
Which among the following is responsible for an induced current in the coil ?
A) Presense of galvanometer in the coil
B) Presense of magnetic flux in the coil
C) Change of magnetic flux through the coil
D) Using coil of large area of cross – section
Answer:
C) Change of magnetic flux through the coil

Question 80.
A coil has 200 turns. If an increase in , magnetic flux through one turn of coil is 0.001 Wb in 0.1 sec, then the maximum induced emf in the coil is ………….
A) 0.2 V
B) 2 V
C) 20 V
D) 20000 V
Answer:
B) 2 V

Question 81.
A metal ring is inserted through the soft iron cylinder which is wounded with copper wire when AC is supplied between the ends of the coil, then ……………..
A) the metal ring is levitated on the coil.
B) the metal ring is levitated and falls down immediately.
C) the metal ring rotates round the cylinder without levitation.
D) none.
Answer:
A) the metal ring is levitated on the coil.

Question 82.
Generator converts mechanical energy to ……………. energy.
A) sound
B) light
C) electrical
D) wind
Answer:
C) electrical

Question 83.
…………………. generated in a closed loop is equal to the rate of change of magnetic flux passing through it.
A) Motional emf BD
B) Induced emf
C) Motional resistance
D) Induced resistance
Answer:
B) Induced emf

Question 84.
According to Faraday’s law the induced emf produced in a closed loop is equal to the …………….
A) magnetic flux
B) change of magnetic flux
C) rate of change of magnetic flux
D) cross – sectional area of the loop.
Answer:
C) rate of change of magnetic flux

Question 85.
A conductor is moving with a speed of 10 nVs perpendicular to the direction of magnetic field of induction 0.5 T. If the induced emf is 5 V then the length of the conductor is …………………….
A) 0.25 m
B) 0.01 m
C) 4 m
D) 1 m
Answer:
D) 1 m

Question 86.
A metal ring is inserted through the soft iron cylinder which is wounded with copper wire. When DC is supplied between the ends of the coil, then …………………….
A) the metal ring is levitated on the coil and stays there.
B) the metal ring is levitated and falls down immediately.
C) the metal ring rotate round the cylinder at the same position.
D) none
Answer:
B) the metal ring is levitated and falls down immediately.

Question 87.
A conductor of 1 m length is moving with a speed of 10 m/s in the direction perpendicular to the direction of magnetic field of induction 0.8T. The induced e.m.f between the ends of the conductor is …………………….
A) 10 V
B) 1 V
C) 2 V
D) 8 V
Answer:
D) 8 V

Question 88.
An induction stove works on this principle
A) electric induction
B) induced emf
C) electro magnetic induction
D) magnetic induction.
Answer:
C) electro magnetic induction

Question 89.
The law which states “An induced emf will appear in such a direction that it opposes the change in its flux” is …………………….
A) Faraday’s law
B) Kirchhoff’s loop law
C) Ohm’s law
D) Lenz’s law
Answer:
D) Lenz’s law

Question 90.
In which among the following the principle of electromagnetic induction is not involved ?
A) In security check, where people are made to walk through a large upright coil of wire
B) Working of tape recorder
C) Working of an electric bulb
D) Working of ATM cards.
Answer:
C) Working of an electric bulb

Question 91.
If ΔΦ/Δt is the rate of change of flux and I is the current then the electric power is …………….
A) I. (Δt/ΔΦ)
B) I. (ΔΦ/Δt)
C) I². (ΔΦ/Δt)
D) (ΔΦ/Δt)
Answer:
B) I. (ΔΦ/Δt)

Question 92.
If I₀ and V₀ are the peak values of AC and AC – emf for an AC generator, then
their rms values respectively are …………….
A) I₀/2,V₀/2
B) [latex]\left(\mathrm{I}_{0} / \sqrt{2}, \mathrm{~V}_{0} / \sqrt{2}\right)[/latex]
C) [latex]\mathrm{I}_{0} \cdot \sqrt{2}, \mathrm{~V}_{0} \cdot \sqrt{2}[/latex]
D) 2I₀,2V₀
Answer:
\left(\mathrm{I}_{0} / \sqrt{2}, \mathrm{~V}_{0} / \sqrt{2}\right)

Question 93.
…………….. current has some frequency
A) A.C
B) D.C
C) A.C & D.C
D) none
Answer:
A) A.C

Question 94.
Electro magnetic induction was proposed by …………….
A) Oersted
B) Faraday
C) Lenz
D) Weber
Answer:
B) Faraday

Question 95.
The rms value of current is 110[latex]\sqrt{2}[/latex] A then its peak value of current is ………………
A) 220 A
B) 110 A
C) 110[latex]\sqrt{2}[/latex] A
D) 1104/[latex]\sqrt{2}[/latex] A
Answer:
A) 220 A

Question 96.
The device used for producing electric current is ……………..
A) generator
B) galvanometer
C) ammeter
D) motor
Answer:
A) generator

Question 97.
Statement X : DC generator uses split rings.
Statement Y : AC generator uses slip rings.
A) Both statements are true
B) Both statements are false
C) X is true, Y is false
D) X is false, Y is true
Answer:
A) Both statements are true

Question 98.
Statement X : Electrical energy is converted into mechanical energy by electric motor.
Statement Y : Mechanical energy is converted into electrical energy by dynamo.
A) Both statements are true
B) Both statements are false
C) X is true, Y is false
D) X is false, Y is true
Answer:
A) Both statements are true

Practice the AP 7th Class Social Bits with Answers Chapter 9 Production in a Factory – A Paper Mill on a regular basis so that you can attempt exams with utmost confidence.

AP State Syllabus 7th Class Social Bits 9th Lesson Production in a Factory – A Paper Mill with Answers

Choose the correct answer.

Question 1.
……….. production is done at the house by small families.
A) Handicrafts
B) Heavy machinery
C) Tools
D) Machinery
Answer:
A) Handicrafts

Question 2.
Papermill needs ………. for operating its machines.
A) Robos
B) Electricity
C) Electricians
D) Officers
Answer:
B) Electricity

Question 3.
A few decades ago, contractors employed tribal people to cut from forests.
A) Hardwood
B) Sandal
C) Bamboo
D) Teak
Answer:
C) Bamboo

Question 4.
Nowadays ……………. is used instead of Bamboo.
A) Oak
B) Birch
C) Teak
D) Subabul
Answer:
D) Subabul

Question 5.
…………… is a permanent worker in the paper mill.
A) Anand
B) Umar
C) Pushpa
D) Narayana
Answer:
A) Anand

Question 6.
………… employees get bonus.
A) Temporary
B) Permanent
C) Casual workers
D) Owners
Answer:
B) Permanent

Question 7.
…………… get paid very high salaries.
A) Accountants
B) Clerks
C) Sr. Managers
D) Managers
Answer:
C) Sr. Managers

Question 8.
…………. bear the loss.
A) Accountants
B) Managers
C) Workers
D) Owners
Answer:
D) Owners

Question 9.
‘Kunawaram’ is a place of
A) tribals
B) worship
C) natural beauty
D) education
Answer:
A) tribals

Question 10.
Among the following the district which has no paper mill
A) West Godavari
B) Guntur
C) Kurnool
D) East Godavari
Answer:
B) Guntur

Question 11.
The third stage in papermaking is
A) Pressing
B) Cutting
C) Spreading the pulp
D) Chipping
Answer:
C) Spreading the pulp

Question 12.
………… is a casual worker.
A) Anand
B) Umar
C) Pushpa
D) Nazar
Answer:
C) Pushpa

Question 13.
…………. get profits from the factory.
A) Accountants
B) Owners
C) Workers
D) Clerks
Answer:
B) Owners

Question 14.
The main paper industries are here in Andhra Pradesh.
A) Andhra paper mill (Rajahmundry)
B) Kurnool
C) Guntur
D) Both A & B
Answer:
D) Both A & B

Question 15.
This is a primary need for producing a good.
A) raw-material
B) finished well
C) goods
D) both A & B
Answer:
A) raw-material

Question 16.
This wood is used generally in the paper industry.
A) Bamboo
B) Eucalyptus
C) Subabul
D) All the above
Answer:
D) All the above

Question 17.
At present this wood is used more in the paper industry.
A) Bamboo
B) Eucalyptus
C) Subabul
D) Guava
Answer:
C) Subabul

Question 18.
Newspaper product is produced by using these in the paper industry.
A) waste paper
B) wastebaskets
C) waste goods
D) none
Answer:
A) waste paper

Question 19.
These are important for the paper industry.
A) electricity
B) freshwater
C) wood, common salt, caustic soda
D) all the above
Answer:
D) all the above

Question 20.
Paper industries are established mainly in these areas
A) bamboo
B) the area of softwood
C) both A & B
D) none
Answer:
C) both A & B

Question 21.
This takes subabul to the machine which cuts it into pieces.
A) conveyor belt
B) crane
C) human beings
D) none
Answer:
A) conveyor belt

Question 22.
The time is taken for cutting a lorry of wood into pieces
A) 20 mts
B) 30 mts
C) 40 mts
D) 50 mts
Answer:
B) 30 mts

Question 23.
The main stage in papermaking
A) cutting into pieces
B) making of wood pulp
C) spreading the wood pulp
D) pressing
Answer:
C) spreading the wood pulp

Question 24.
The paper mill runs 24 hours a day. The workers work in three shifts of eight hour’s each. In each shift, about workers are at work.
A) 700 – 800
B) 800 – 900
C) 900- 1000
D) 1000-1100
Answer:
B) 800 – 900

Question 25.
These works In the paper industry.
A) high qualified engineers
B) who qualified ITI or Polytechnic
C) some illiterates
D) all the above
Answer:
D) all the above

Question 26.
The facilities provided to permanent employees
A) Provident Fund
B) Health insurance
C) Leave facilities
D) All the above
Answer:
D) All the above

Question 27.
The earnings of daily labourers in a month in the paper industry.
A) 2000
B) 2500
C) 3000
D) 3500
Answer:
B) 2500

Question 28.
The industries which are not under the ownership of a person or a group
A) civil industries
B) public industries
C) capital industries
D) none
Answer:
B) public industries

Question 29.
This kind of pollution is caused by the paper industry.
A) air
B) water
C) land, food
D) all the above
Answer:
D) all the above

Question 30.
These are not provided to daily labourers.
A) PF
B) Health insurance
C) Leave facilities
D) All the above
Answer:
D) All the above

Question 31.
What does the picture show?

A) Andhra Paper Mill
B) Coastal Paper Mill
C) Sugar factory, Vyyuru
D) Sugar factory, Tiruvuru
Answer:
A) Andhra Paper Mill

Question 32.
Fill in the empty box.

A) Papercutting
B) Making fibre
C) For uniform width, length & thickness
D) Colours adding
Answer:
C) For uniform width, length & thickness

Question 33.
Study the different stages of the papermaking process.

Which of the following is the correct order of missing stages in the places of i, ii, iii,
A) i – cutting, ii – the making of wood pulp, iii – spreading the pulp
B) i – the making of wood pulp, ii- cutting, iii – spreading the pulp
C) i – spreading the pulp, ii – cutting, iii – the making of wood pulp
D) i – made of wood pulp, ii – spreading the pulp, iii – cutting
Answer:
D) i – made of wood pulp, ii – spreading the pulp, iii – cutting

Question 34.
Which of the following is a good sign of an environmentally-friendly attitude among the students?
A) Visit the paper industries
B) Understand the paper making stages
C) Increase the chemical utilisation for papermaking
D) Reduce the usage of paper
Answer:
A) Visit the paper industries

Question 35.
To help paper mills, instead of Bamboo, Government is encouraged to grow
A) Sababul
B) Neem
C) Mangroves
D) Dale Palms
Answer:
A) Sababul

Answer the following questions based on the flow chart given below.

Question 36.
At which stage the thickness of the paper is set?
A) Cutting
B) Making of wood pulp
C) Pressing, drying and rolling
D) Spreading the pulp
Answer:
D) Spreading the pulp

Question 37.
Which of the following is the finished product of the above process?
A) Wood
B) Pulp
C) Paper
D) Fibre
Answer:
C) Paper

Practice the AP 10th Class Physical Science Bits with Answers Chapter 11 Principles of Metallurgy on a regular basis so that you can attempt exams with utmost confidence.

AP State Syllabus 10th Class Physical Science Bits 11th Lesson Principles of Metallurgy with Answers

CONCEPT -I: Occurrence of the Metals & Reactivity of Metals

Question 1.
Metallurgy is .the process of extraction of ……………from the ores.
A) Non metals
B) Metals
C) Metalloids
D) Noble gases
Answer:
B) Metals

Question 2.
The alloy of copper and tin is ………………
A) Brass
B) Bronze
C) Steel
D) Stainless steel
Answer:
B) Bronze

Question 3.
The metals which are available in native form are ………………
A) Au
B) Ag
C) Cu
D) All of these
Answer:
D) All of these

Question 4.
The elements or compounds of the metals which occur in nature in the earth crust are called ………………
A) ores
B) minerals
C) gangue
D) slag
Answer:
B) minerals

Question 5.
The minerals from which the metals are extracted without economical loss are called ………………
A) gangue
B) slag
C) calcination
D) ore
Answer:
D) ore

Question 6.
The ore of aluminium is ………………
A) Clay
B) Bauxite
C) Horn silver
D) Haematite
Answer:
B) Bauxite

Question 7.
Match the following:
a) Horn silver — i) Kcl. MgCl₂. 6H₂O
b) Haematite — ii) AgCl
c) Cinnabar — iii) Fe₂O₃
d) Camalite — iv) Hgs
A) a → ii, b → iii, c→ iv, d → i
B) a→ i, b → ii, c → iii, d → iv
C) a → iv, b → iii, c → ii, d → i
D) a → iv, b → i, c → di, d → iii
Answer:
A) a → ii, b → iii, c→ iv, d → i

Question 8.
Arranging metals in the decreasing order of their reactivity is called ………….
A) Reactivity series
B) Lyman series
C) Balmer series
D) Pfund series
Answer:
A) Reactivity series

Question 9.
The following are examples for high reactivity mentals ………….
i) Potassium
ii) Sodium
iv) Magnesium
A) Only i
B) Both i and ii
C) i, ii and iii
D) All of these
Answer:
D) All of these

Question 10.
Ores of many metals are ………….
A) oxides
B) chlorides
C) sulphides
D) both A and C
Answer:
D) both A and C

Question 11.
Find the odd one out based on reactivity.
A) K
B) Na
C) Au
D) Ca
Answer:
C) Au

Question 12.
The ore of calcium metal among the following ………….
A) Bauxite
B) Lime stone
C) Rock salt
D) Haematite
Answer:
B) Lime stone

Question 13.
The fusible product formed when the impurity present in ore react with flux is called ………….
A) Gangue
B) Slag
C) Mineral
D) Alloy
Answer:
B) Slag

Question 14.
Carnalite is the ore of ………….
A) Pb
B) Mg
C) Hg
D) Zn
Answer:
B) Mg

Question 15.
The metal extracted from Gelena is ………….
A) Hg
B) Pb
C) Mg
D) Zn
Answer:
B) Pb

Question 16.
The metals having high reactivity from the following K, Na, Mg, Zn, Cu, Au
A) Zn, Cu, Au
B) Cu, Zn, Mg
C) K, Na, Mg
D) Na, Mg, Zn
Answer:
C) K, Na, Mg

Question 17.
The ore of mercury is ………….
A) Galena
B) Cinnabar
C.) Gypsum
D) Zincite
Answer:
B) Cinnabar

Question 18.
The metal which do not displace hydrogert from dil. HCl is ………………
A) Zn
B) Mg
C) Cu
D) Fe
Answer:
C) Cu

Question 19.
The formula of Gelena is
A) ZnS
B) MnO₂
C) CaC0₃
D) PbS
Answer:
D) PbS

Question 20.
Match the following :
a) Copper Iron Pyrites — i) ZnS
b) Zinc blende — ii) Cu FeS₂
c) Magnesite — iii) MgSO₄. 7H₂O
d) Epsom salt — iv) MgCO₃
A) a → i, b → ii, c → iii, d → iv
B) a → iv, b → iii, c → ii, d → d
C) a → ii, b → d, c → iv, d → iii
D) a → iv, b → ii, c → i, d → iii
Answer:
C) a → ii, b → d, c → iv, d → iii

Question 21.
Match the following :
a) Horn silver — i) MnO₂
b) Pyrolusite — ii) AgCl
c) Zincite — iii) NaCl
d) Rock salt — iv) ZnO
A) a → i, b→ii, c → iii, d →iv
B) a → iv, b → iii, c → ii, d → i
C) a → ii, b → i, c → iv, d → iii
D) a → iv, b → ii, c → i, d→iii
Answer:
C) a → ii, b → i, c → iv, d → iii

Question 22.
The reactivity of metals Al, Ag and Cu decrease in this order.
A) AZ > Cu > Ag
B) Ag > Cu > Al
C) Ag > Al> Cu
D) Cu > Ag > Al
Answer:
A) AZ > Cu > Ag

CONCEPT – II: Extraction of metals from their ores

Question 23.
The stages involved in extraction of metal from its ore ……………..
A) Concentration or dressing
B) Extraction of crude metal
C) Refining or purification of the metal
D) All of these
Answer:
D) All of these

Question 24.
The impurity present in ore is called……………..
A) Gangue
B) Flux
C) Slag
D) Mineral
Answer:
A) Gangue

Question 25.
Which of the following is a carbonate ore ?
A) Magnesite
B) Bauxite
C) Gypsum
D) Galena
Answer:
A) Magnesite

Question 26.
Which of the following is the correct formula of Gypsum ?
A) CUSO₄.2H₂O
B) CaSO₄. 1/2 H₂O
C) CuSO₄. 5H₂O
D) CaSO₄. 2H₂O
Answer:
D) CaSO₄. 2H₂O

Question 27.
Cinnabar is an ore of ……………..
A) Zn
B) Pb
C) Hg
D) Al
Answer:
C) Hg

Question 28.
The metal that occur in native form is……………..
A) Pb
B) Au
C) Fe
D) Hg
Answer:
B) Au

Question 29.
The most abundant metal in the earth’s crust is ……………..
A) silver
B) aluminium
C) zinc
D) iron
Answer:
B) aluminium

Question 30.
The oil used in the froth floatation process is……………..
A) kerosene oil
B) pine oil
C) coconut oil
D) olive oil
Answer:
B) pine oil

Question 31.
Froth floatation is a method used for the purification of ……………..ore.
A) sulphide
B) oxide
C) carbonate
D) nitrate
Answer:
A) sulphide

Question 32.
Getting rid of unwanted rocky material from ore is ……………..
A) Concentration
B) Enrichment of ore
C) Dressing
D) All of these
Answer:
D) All of these

Question 33.
The method used for concentration of Galena is ……………..
A) Hand picking
B) Froth floatation
C) Washing
D) Magnetic separation
Answer:
B) Froth floatation

Question 34.
The process used for concentration in the given diagram is ……………..

A) Hand picking
B) Washing
C) Froth floatation
D) Magnetic seperation
Answer:
C) Froth floatation

Question 35.
…………….. method is used for concentration of magnetite ore
A) Hand picking
B) Washing
C) Froth floatation
D) Magnetic seperation
Answer:
D) Magnetic seperation

Question 36.
The process involved in the given diagram is……………..

A) Hand picking
B) Washing
C) Froth floatation
D) Magnetic separation
Answer:
D) Magnetic separation

Question 37.
Normal reductions are not suitable for the above given activity series because……………..
A) Temperature required for reduction is too high
B) Temperature required for reduction is too small
C) More expensive
D) Both A and C
Answer:
D) Both A and C

Question 38.
The method used for extraction of metals at the top of the activity series is ……………..
A) Simple reduction of their oxides
B) Electrolysis of their aqueous solutions
C) Electrolysis of their fused compounds
D) All of these
Answer:
C) Electrolysis of their fused compounds

Question 39.
During electrolysis of NaCZ the substances formed at anode and cathode are ……………..
A) Na, Cl₂
B) Cl₂, Na
C) Na₂, Cl
D) None of these
Answer:
B) Cl₂, Na

Question 40.
The ores of metals in the middle of activity series generally present in the form of……………..
i) Oxides
ii) Chlorides
iii) Sulphates
iv) Sulphides
A) (i) and (ii)
B) (i) and (iii)
C) (ii) and (iii)
D) (i) and (iv)
Answer:
D) (i) and (iv)

Question 41.
In extraction of metals in the middle of activity series before reduction they are converted into ……………..
A) Metal chlorides
B) Mefal carbonates
C) Metal oxides
D) Metal sulphates
Answer:
C) Metal oxides

Question 42.
The ore is heated in the presence of oxygen or air below its melting point is called ……………..
A) Calcination
B) Roasting
C) Smelting
D) Poling
Answer:
B) Roasting

Question 43.
During Roasting …………….. ore is converted into …………….. ore.
A) Sulphide, Chloride
B) Chloride, Oxide
C) Sulphide, Oxide
D) Sulphide, Nitrate
Answer:
C) Sulphide, Oxide

Question 44.
The methods used to extract metals in the middle of the activity series are ……………..
i) Reduction of metal oxides with carbon
ii) Reduction of metal oxides with carbon mono oxide
iii) Auto reduction
iv) Reduction of ore by more reactive metals
A) Only (i)
B) Both (i) and (ii)
C) (i), (ii) and (iv)
D) All of these
Answer:
D) All of these

Question 45.
The reducing agent in thermite process is ……………..
A) Al
B) Mg
C) Fe
D) Si
Answer:
A) Al

Question 46.
When cinnabar is heated in air it first converted into …………….. and then reduced to ……………..
A) HgO, Hg
B) CuO, Cu
C) Hg, HgO
D) ZnO, Zn
Answer:
A) HgO, Hg

Question 47.
The process of obtaining the pure metal from impure metal is called ……………..
A) Roasting
B) Calcination
C) Smelting
D) Refining
Answer:
D) Refining

Question 48.
The …………….. method suitable for purification of low boiling metals.
A) Distillation
B) Poling
C) Liquation
D) Electrolytic refinery
Answer:
A) Distillation

Question 49.
The …………….. method is suitable for purification of low melting metals.
A) Distillation
B) Poling
C) Liquation
D) Electrolytic refinery
Answer:
C) Liquation

Question 50.
Blister copper is purified by using……………..
A) Distillation
B) Poling
C) Liquation
D) Calcination
Answer:
B) Poling

Question 51.
Match the following:
a) Distillation — i) Tin
b) Electrolytic refinery — ii) Zinc, Mercury
c) Liquation — iii) Copper
A) a→i, b → ii, c →iii
B) a → iii, b →ii, c → i
C) a →ii, b → iii, c → i
D) a →iii, b →i, c → ii
Answer:
C) a →ii, b → iii, c → i

Question 52.
The anode mud formed during electrolysis of acidified copper sulphate is ……………..
i) Antimony
ii) Selenium
iii) Tellurium
iv) Silver
A) Only (i)
B) Both (i) and (ii)
C) (i), (ii) and (iii)
D) All of these
Answer:
D) All of these

Question 53.
Tarnishing of silver is due to formation of ……………..
A) Silver chloride
B) Silver nitrate
C) Silver sulphate
D) Silver sulphide
Answer:
D) Silver sulphide

Question 54.
Corrosion of iron occurs in the presence of …………….. and……………..
A) kerosene, water
B) air, water
C) air, oil
D) kerosene, alcohol
Answer:
B) air, water

Question 55.
The chemical name of rust ……………..
A) Hydrated zinc oxide
B) Hydrated ferric oxide
C) Hydrated copper oxide
D) Hydrated calcium oxide
Answer:
B) Hydrated ferric oxide

Quesiton 56.
The formula of rust is……………..
A) Fe₂O₃
B) FeO
C) Fe₂O₃. XH₂O.
D) Fe(OH)₃
Answer:
C) Fe₂O₃. XH₂O.

Question 57.
If carbon dioxide is dissolved in water it produces……………..acid
A) Carbonic
B) Hydrochloric
C) Chlorous
D) Sulphuric
Answer:
A) Carbonic

Question 58.
Pyro chemical process means process which takes place in the presence of ……………..
A) lightz
B) water
C) heat
D) electricity
Answer:
C) heat

Question 59.
Pyro chemical process among these :……………..
A) Smelting
B) Roasting
C) Calcination
D) All of these
Answer:
D) All of these

Question 60.
The purpose of smelting an ore is to …………….. it
A) oxidise
B) reduce
C) neutralise
D) none of these
Answer:
B) reduce

Question 61.
The chemical process in which the ore is heated in the absence of air is called ……………..
A) Roasting
B) Calcination
C) Smelting
D) All of these
Answer:
B) Calcination

Question 62.
The method used to convert magnesite to oxide ore is ……………..
A) Roasting
B) Calcination
C) Smelting
D) All of these
Answer:
B) Calcination

Question 63.
…………….. is substance added to ore to remove the gangue ?
A) Flux
B) Slag
C) Rust
D) Mineral
Answer:
A) Flux

Question 64.
Which of the following is useful to remove acidic gangue
i) CaO
ii) MgO
iii) FeO
iv) Si02
A) Only (i)
B) Both (i) and (ii)
C) (i), (ii) and (iii)
D) All of these
Answer:
C) (i), (ii) and (iii)

Question 65.
Which of the following is useful to remove basic gangue
A) SiO₂
B) CO₂
C) P₂O₅
D) All of these
Answer:
D) All of these

Question 66.
…………….. is used to carry pyro chemical process.
A) Furnace
B) Hearth
C) Chimney
D) Fire box
Answer:
A) Furnace

Question 67.
…………….. is place inside the funace where ore is kept for heating purpose.
A) Furnace
B) Hearth
C) Chimney
D) Fire box
Answer:
B) Hearth

Question 68.
For heamatite ore………………. is used as fuel and …………. is used as flux.
A) coke, quick lime
B) coke, lime stone
C) charcoal, lime stone
D) charcoal, quick lime
Answer:
B) coke, lime stone

Question 69.
Smelting is carried out in a…………….. furnace.
A) Reverberatory
B) Open hearth
C) Restart
D) Blast
Answer:
D) Blast

Question 70.
…………….. furnace is used for roasting.
A) Reverberatory
B) Open hearth
C) Retart
D) Blast
Answer:
A) Reverberatory

Question 71.
…………….. is the outlet through which flue (waste) gases go out of the furnace.
A) Hearth
B) clumney
C) Fire box
D) None of these
Answer:
B) clumney

Question 72.
…………….. is the part of furnace where the fuel is kept for burning.
A) Hearth
B) Chimney
C) Fire box
D) None of these
Answer:
C) Fire box

Question 73.
In……………..furnace both fire box and hearth are combined in big chamber which accommodates both ore and fuel.
A) Reverberatory
B) Open hearth
C) Retart
D) Blast
Answer:
D) Blast

Question 74.
…………….. furnace has both fire box and hearth separated.
A) Reverberatory
B) Open hearth
C) Retart
D) Blast
Answer:
A) Reverberatory

Question 75.
In……………..furnace there is no direct contact between the hearth and fire box.
A) Reverberatory
B) Open hearth
C) Retart
D) Blast
Answer:
C) Retart

Question 76.
Thermite reaction involves reaction of metal oxide with ……………..
A) Ag
B) Fe
C) Al
D) Hg
Answer:
C) Al

Question 77.
Generally metallic oxides are converted into metals by ……………..
A) Roasting
B) Calcination
C) Oxidation
D) Reduction
Answer:
D) Reduction

Question 78.
The reducing agent used to join railings of railway tracks is ……………..
A) Al
B) CO₂
C) SO₂
D) None of these
Answer:
A) Al

Question 79.
In electrolysis the reaction that takes place at cathode is ……………..
A) Oxidation
B) Reduction
C) Redox reaction
D) None
Answer:
B) Reduction

Question 80.
The impurities present in the metal are oxidized in this method ……………..
A) Liquation
B) Poling
C) Distillation
D) Auto reduction
Answer:
B) Poling

CONCEPT -III: Corrosion

Question 81.
Blast furnace is mainly suitable for ……………..
A) Smelting
B) Roasting
C) Calcination
D) Oxidation
Answer:
A) Smelting

Question 82.
The chemical formula of rust is
A) Fe₂O₃.XH₂O
B) FeO
C) FeS
D) Fe₂O₅
Answer:
A) Fe₂O₃.XH₂O

Question 83.
Which of the following is used as reducing agent in metallurgical process.
A) Coke
B) O₂
C) KMnO₄
D) None of these
Answer:
A) Coke

Question 84
Which of the following represents calcination ?
im
Answer:
A

Question 85.
Rusting of iron is ……………..
A) reduction process
B) oxidation process
C) chemical decomposition
D) none of these
Answer:
B) oxidation process

Question 86.
A common metal which is highly resistant to corrosion is ……………..
A) Magnesium
B) Aluminium
C) Copper
D) Iron
Answer:
B) Aluminium

Question 87.
Steel is an alloy of ……………..
A) iron and aluminium
B) carbon and manganese
C) zinc and iron
D) iron and carbon
Answer:
D) iron and carbon

Question 88.
Match the following:
a) Magnesite — i) Ca
b) Horn silver — ii) Mg
c) Lime stone — iii) Fe
d) Haematite — iv) Ag
A) a → i, b → ii, c → iii, d → iv
B) a → iv, b → iii, c → ii, d → i
C) a → ii, b → iv, c → i, d → iii
D) a → iv, b → ii, c → i, d → iii
Answer:
C) a → ii, b → iv, c → i, d → iii

Question 89.
Match the following:
a) Sulphate ore — i) Magnasite
b) Carbonate ore — ii) Epsum salt
c) Oxide ore — iii) Rock salt
d) Chloride ore — iv) Haematite
A) a → i, b → ii, c → iii, d → iv
B) a → iv, b → iii, c → ii, d → i
C) a → iii b → ii, c → i, d—iv
D) a → ii, b → i, c → iv, d → iii
Answer:
D) a → ii, b → i, c → iv, d → iii

Practice the AP 10th Class Physical Science Bits with Answers Chapter 12 Carbon and its Compounds on a regular basis so that you can attempt exams with utmost confidence.

AP State Syllabus 10th Class Physical Science Bits 12th Lesson Carbon and its Compounds with Answers

Concept – 1 : Versatile Nature of Carbon

Question 1.
The following is not correct about carbon
A) It is a non metal
B) It belongs to 14th group
C) Its electron configuration is 1s² 2s²2p²
D) Its valency is 3
Answer:
D) Its valency is 3

Question 2.
The electronegativity of carbon is
A) 1.5
B) 2.5
C) 3.5
D) 4
Answer:
B) 2.5

Question 3.
Thecovalency of carbon is
A) 1
B) 2
C) 3
D) 4
Answer:
D) 4

Question 4.
Match the following:
a) Methane — i) sp
b) Ethylene or ethene — ii) sp³
c) Acetylene or ethyne — iii) sp²
A) a → i, b → ii, c → iii
B) a → iii, b → ii, c → i
C) a → ii, b → iii, c → i .
D) a → ii, b → i, c → iii
Answer:
C) a → ii, b → iii, c → i

Question 5.
Match the following:
a) Methane — i), 180°
b) Ethene — ii) 109° 28′
c) Ethyne — iii) 120°
A) a → i, b → ii, c → iii
B) a → iii, b → ii, c i
C) a → ii, b → i, c → iii
D) a → ii, b → iii, c → i
Answer:
D) a → ii, b → iii, c → i

Question 6.
Carbon (Z=6) is the element of group-IVA of periodic table. Which of the following is the atomic number of next number in the group
A) 9
B) 14
C) 15
D) 17
Answer:
B) 14

Question 7.
The number of sigma and pi bonds in ethene are …………,………………respectively.
A) 1, 5
B) 2, 3
C) 3,2
D) 5,1
Answer:
D) 5,1

Question 8.
Number of sigma and pi bonds in ethyne are ……………
A) 2, 3
B) 3, 2
C) 4,1
D) 1, 4
Answer:
B) 3, 2

Question 9.
Ethylene is common name for ……………….
A) ethene
B) ethane
C) ethyne
D) ethanol
Answer:
A) ethene

Question 10.
Acetylene is common name for ……………..
A) ethane
B) ethene
C) ethyne
D) ethanol
Answer:
C) ethyne

Question 11.
The number of a bonds in methane is …………………
A) 2
B) 3
C) 4
D) 1
Answer:
C) 4

Question 12.
The electronic configuration of carbon in excited state is ………………….
A) 1s² 2s² 2p¹_y2p¹_z
B) 1s² 2s¹ 2p¹_x2p¹_y2p¹_z
C) 1s² 2s² 2p¹_x 2p¹_y
D) 1s² 2s² 2p²x
Answer:
B) 1s² 2s¹ 2p¹_x2p¹_y2p¹_z

Question 13.
The bond angle in C₂H₂ molecule is
A) 109° 28′
B) 120°
C) 180°
D) 107°
Answer:
D) 107°

Question 14.
How many unpaired electrons the carbon atom posseses in the ground state?
A) 2
B) 3
C) 4
D) 1
Answer:
A) 2

Question 15.
The type of hybridization in CH₄ molecule is ………..
A) sp
B) sp²
C) sp³
D) sp³d
Answer:
C) sp³

Question 16.
Which of the following molecules undergo sp hybridisation ?
A) CH₄
B) C₂H₄
C) C₂H₆
D) C₂H₂
Answer:
D) C₂H₂

Question 17.
Who among the following disproved vitalism theory ?
A) Berzelius
B) Linus pauling
C) Autbau
D) Wohler
Answer:
D) Wohler

Question 18.
The bond angle in C₂H₄ is
A) 109° 28′
B) 180°
C) 104° 27′
D) 120°
Answer:
D) 120°

Question 19.
The chemical bonds present in C₂H₂ are
A) 2 sigma and 3 pi
B) 1 sigma and 2 pi
C) 3 sigma and 2 pi
D) 2 sigma and 1 pi
Answer:
C) 3 sigma and 2 pi

Question 20.
n – butane and isobutane are
A) structural isomers
B) functional isomers
C) stereo isomers
D) geometrical isomers
Answer:
A) structural isomers

CONCEPT – II – Allotropes of Carbon

Question 21.
The property of an element to exist in two or more physical forms with same chemical properties but different physical properties is called
A) catenation
B) isomerism
C) allotropy
D) conjugation
Answer:
C) allotropy

Question 22.
The amorphous forms of carbon allutropes
i) coal
ii) coke
iii) animal charcoal
iv) diamond
A) only i
B) only ii
C) both i and ii
D) i, ii and iii
Answer:
D) i, ii and iii

Question 23.
The crystalline forms of carbon allotropes
i) diamond
ii) graphite
iii) lamp black
iv) buckminster fullerene
A) only i
B) both i and ii
C) i, ii and iv
D) all of these
Answer:
C) i, ii and iv

Question 24:
The hybridisation present in diamond is
A) sp
B) sp²
C) sp³
D) dsp²
Answer:
C) sp³

Question 25.
The hardest material among these is ……………….
A) diamond
B) graphite
C) buckminster fullerene
D) coke
Answer:
A) diamond

Question 26.
In diamond each carbon atom has a …………………… environment.
A) trigonal planar
B) tetrahedral
C) square planar
D) pyramidal
Answer:
B) tetrahedral

Question 27.
Graphite forms ……………. layer structure.
A) one dimensional
B) two dimensional
C) three dimensional
D) none of these
Answer:
B) two dimensional

Question 28.
In layer structure of graphite the carbon atoms are in ………………. environment.
A) trigonal planar
B) tetrahedral
C) square planar
D) pyramidal
Answer:
A) trigonal planar

Question 29.
The hybridisation present in graphite is …………………….
A) sp
B) sp²
C) sp³
D) d²sp³
Answer:
B) sp²

Question 30.
The distance between two successive layers of graphite is…………….
A) 1.35 A°
B) 2.35 A°
C) 3.35 A°
D) 4.35 A0
Answer:
C) 3.35 A°

Question 31.
The use of graphite is ……………….
A) lubricant
B) lead in pencils
C) good conductor of electricity
D) all of these
Answer:
D) all of these

Question 32.
Delocalized n system is present in …….
A) diamond
B) charcoal
C) coal
D) graphite
Answer:
D) graphite

Question 33.
Graphite is a good conductor of electricity due to ………………….
A) delocalized a system
B) localized n system
C) delocalized n system
D) localized a system
Answer:
C) delocalized n system

Question 34.
Buckminster fullerene was discovered by ………………
A) Robert F. Curl
B) Harold W.Kroto
C) Richard E. Smalley
D) All of these
Answer:
D) All of these

Question 35.
Bucky balls are ………………. fullerences.
A) cylindrical
B) spherical
C) conical
D) elliptical
Answer:
B) spherical

Question 36.
The shape of Buckminster fullerene is ………………..
A) soccer ball
B) cricket ball
C) basket ball
D) base ball
Answer:
A) soccer ball

Question 37.
The pentagonal and hexagonal faces in Buckminster fullerene are ……………… and ………………. respectively.
A) 12, 20
B) 20,12
C) 12,18
D) 18,12
Answer:
A) 12, 20

Question 38.
The hybridisation present in Buckminster fullerene is ……………….
A) sp³
B) sp²
C) sp
D) sp³d²
Answer:
B) sp²

Question 39.
……. is useful in curing melanoma cancer.
A) Diamond
B) Graphite
C) Fullerene
D) Nano tube
Answer:
C) Fullerene

Question 40.
Nano tubes were discovered by …………………
A) H. W. Kroto
B)-RE. Smalley
C) Sumi Li Jima
D) R. F. Curl
Answer:
C) Sumi Li Jima

Question 41.
The uses of nano tubes are
i) used as molecular wires
ii) used in integrated circuits instead of copper
iii) biomolecules are inserted into nano tubes to inject them into a single cell
A) only i
B) both i and ii
C) i, ii and iii
D) none of these
Answer:
C) i, ii and iii

Question 42.
Graphene is extracted from
A) graphite
B) diamond
C) nano tube
D) coal
Answer:
A) graphite

Question 43.
…………. conducts electricity better than copper
A) Graphite
B) Graphene
C) Nano tubes
D) Buckminster fullerene
Answer:
B) Graphene

Question 44.
…………… named the compounds derived from living organisms as organic compound
A) Wohler
B) Berzelius
C) Lewis
D) Pauling
Answer:
B) Berzelius

Question 45.
The first synthetic carbon compound is …….. and it was prepared by …………
A) Acetic acid, Wohler
B) Alcohol, Berzelius
C) Urea, Wohler
D) Dimethyl, Lewis
Answer:
C) Urea, Wohler

Question 46.
The formula of Urea is
A) NH₄CNO
B) CO(NH₂)₂
C) CH₃CONH₂
D) C₃H₇NH₂
Answer:
B) CO(NH₂)₂

Question 47.
The formula of ammonium cyanate is ……………..
A) NH₄CNO
B) CO(NH₂)₂
C) CH₃COONa
D) CH₃NH₂
Answer:
A) NH₄CNO

Question 48.
The ability to form longest chains with its own atoms is ………..
A) Allotropy
B) Isomerism
C) Catenation
D) Combustion
Answer:
C) Catenation

Question 49.
The following elements show catenation.
A) carbon
B) sulphur
C) phosphorous
D) all of these
Answer:
D) all of these

Question 50.
The properties which made carbon as versatile element
i) Tetra valency
ii) Catenation
iii) Isomerism
iv) Formation of multiple bonds
A) only i
B) only ii
C) both i and ii
D) All of these
Answer:
D) All of these

Question 51.
The hardest material among the allotropes of carbon is
A) diamond
B) graphite
C) coke
D) coal
Answer:
A) diamond

Question 52.
Which of the following is not an electric conductor?
A) nano tube
B) graphene
C) diamond
D) graphite
Answer:
C) diamond

Question 53.
In integrated circuit ………….. are used instead of copper to connect the components together
A) graphite
B) C₆₀
C) nano tubes
D) PVC
Answer:
C) nano tubes

CONCEPT – III : Hydro Carbons

Question 54.
Hydrocarbons contains the following elements
A) H, C
B) H, CO
C) N, C
D) H, Cl
Answer:
A) H, C

Question 55.
The characteristic properties of an organic compound which depend on atom or group of atoms in its molecule is known as …………………
A) standard group
B) functional group
C) associate group
D) alkyl group
Answer:
B) functional group

Question 56.
The phenomenon of possessing same molecular formula but different properties by compounds in known as ……..
A) Allotropy
B) Catenation
C) Isomerism
D) Combustion
Answer:
C) Isomerism

Question 57.
Which of the following is a saturated hydrocarbon?
A) C₂H₄
B) C₂H₂
C) C₃H₆
D) C₂H₆
Answer:
D) C₂H₆

Question 58.
The general formula of alkynes is
A) C₂H_2n+2
B) C_nH_2n-2
C) C_nH_2n
D) C_nH_2n+1
Answer:
B) C_nH_2n-2

Question 59.
Match the following :
a) Alkanes — i) Hydrocarbons containing double bonds
b) Alkenes — ii) Hydrocarbons containing triple bonds
c) Alkynes — iii) Hydrocarbons containing single bonds
A) a → i, b → iii, c → ii
B) a → i, b → ii, c → iii
C) a → iii, b → i, c → ii
D) a → ii, b → iii, c → i
Answer:
C) a → iii, b → i, c → ii

Question 60.
Match the following :
a) Alkanes i) C₂H_2n-2
b) Alkenes ii) C₂H_2n+2
c) Alkynes iii) C₂H_2n
A) a → ii, b → iii, c → i
B) a → i, b → ii, c → iii
C) a → iii, b → ii, c → i
D) a → iii, b → i, c → ii
Answer:
a) Alkanes i) C₂H_2n-2

Question 61.
The hydrocarbon having single bonds between the carbon atoms is ……………
A) Ethane
B) Ethene
C) Propene
D) Butyne
Answer:
A) Ethane

Question 62.
The number of hydrogen atoms in octane is ………………
A) 8
B) 18
C) 16
D) 14
Answer:
B) 18

Question 63.
To detect the leakage of gas from the cylinder the substance added to the gas is……..
A) C₂H₅SH
B) C₂H₅OH
C) CH₃COOH
D) CH₃CHO
Answer:
A) C₂H₅SH

Question 64.
Which of the following compound is not a hydrocarbon ?
A) R—CH₃
B) RCH —CH₂
C) RCH₂OH
D) CH₃CH = CH₂
Answer:
B) RCH —CH₂

CONCEPT – 4 : Nomenclature of Hydrocarbons

Question 65.
IUPAC name of alkene containing 3 carbon atoms is ………………..
A) ethene
B) propene
C) butene
D) pentene
Answer:
B) propene

Question 66.
Carbon compounds containing double bonds and triple bonds are called ………….. hydrocarbons.
A) saturated
B) unsaturated
C) super saturated
D) none of these
Answer:
B) unsaturated

Question 67.
Number of single covalent bonds in ammonia is . …………..
A) 1
B) 2
C) 3
D) 4
Answer:
C) 3

Question 68.
Which one of the following hydrocarbon can show isomerism
A) C₂H₄
B) C₂H₆
C) C₃H₈
D) C₄H₁₀
Answer:
D) C₄H₁₀

Question 69.
The number of structural isomers for pentane is
A) 2
B) 3
C) 4
D) 5
Answer:
B) 3

Question 70.
The series of carbon compounds in which two successive compounds differ -CH₂ unit is called …………..
A) Reactivity series
B) Homologous series
C) Lyman series
D) Balmer series
Answer:
B) Homologous series

Question 71.
Match the following:
a) Alcohol — i) — CHO
b) Aldehyde — ii) OH
c) Ketone — iii) COOH
d) Acid — iv) C0
A) a → i1b →ii,c →iii,d →iv
B) a →iv,b →iii,c →ii,d →i
C) a →ii,b →i,c →iv,d →iii
D)a →iv,b →ii,c →iii,d →i
Answer:
C) a →ii,b →i,c →iv,d →iii

Question 72.
Match the following
a) Butanol — i) CH₃-CH₂-CH₂-CH₂-COOH
b) Pentanoic acid — ii) CH₃ – CH₂ – CH₂ – CH₂ – CH₂– CHO
c) Propanone — iii) CH₃-CH₂-CH₂-CH₂-OH
d) Hexanal — iv) CH₃COCH₃
A) a → i,b → ii,c → iii,d → iv
B) a → iv,b → iii,c → ii,d → i
C) a → iii,b → i,c → iv,d → ii
D) a → iv,b → ii,c → iii,d → i
Answer:
C) a → iii,b → i,c → iv,d → ii

Question 73.
A compound which is a basic constituent of many cough syrups
A) Methanol
B) Ethanol
C) Ethyl alcohol
D) Both B and C .
Answer:
D) Both B and C .

Question 74.
Very dilute solution of ethanoic acid is …………..
A) Vinegar
B) Baking soda
C) Washing soda
D) Quick lime
Answer:
A) Vinegar

Question 75.
The functional group present in methanol is ……….
A) Alcohol
B) Aldehyde
C) Acid
D) Ketone
Answer:
A) Alcohol

Question 76.
The first member of homologous series among alkynes is ………………..
A) Methyne
B) Ethyne
C) Propyne
D) Butyne
Answer:
B) Ethyne

Question 77.
The suffix used for naming aldehyde is ………….
A) — ol
B) — al
C) — one
D) — ene
Answer:
B) — al

Question 78.
—NH₂ group is called …………….
A) ester
B) ether
C) amine
D) amide
Answer:
C) amine

Question 79.
Combustion of hydrocarbon is generally accompanied by the evolution of ……………..
A) heat
B) light
C) both heat and light
D) electric current
Answer:
C) both heat and light

Question 80.
Oxidation of ethyl alcohol forms
A) ethanoic acid
B) acetic acid
C) formic acid
D) both A and B
Answer:
D) both A and B

Question 81.
The oxidizing agent used for conversion of alcohols to carboxylic acids is …………….
A) Alkaline potassium dichromate
B) Manganese dioxide
C) Acidified potassium dichromate
D) Both A and C
Answer:
D) Both A and C

Question 82.
The catalyst used in hydrogenation of oils is ………………..
A) Pd
B) Pt
C) Ni
D) Co
Answer:
C) Ni

Question 83.
Unsaturated organic compounds participate in …………….. reactions.
A) substitution
B) addition
C) elimination
D) rearrangement
Answer:
B) addition

Question 84.
A reaction in which an atom or a group of atoms in a compound is replaced by other atom or group of atoms is called
……………… reaction.
A) addition
B) elimination
C) substitution
D) rearrangement
Answer:
C) substitution

Question 85.
Paraffins are ………………..
A) Alkanes
B) Alkenes
C) Alkynes
D) Alcohols
Answer:
A) Alkanes

Question 86.
Saturated hydrocarbons (Alkanes) participate in ……………… reactions.
A) addition
B) substitution
C) elimination
D) rearrangement
Answer:
B) substitution

Question 87.
The process of conversion of starches and sugars to ethyl alcohol is called ……………..
A) carbonisation
B) esterification
C) condensation
D) fermentation
Answer:
D) fermentation

Question 88.
2 – Methyl propane is also called
A) Iso propane
B) n-butane
C) n – propane
D) Isobutane
Answer:
D) Isobutane

Question 89.
The IUPAC name of
HO – CH₂– CH₂– CH₂– COOH.
A) 1 – hydroxy – 4 -butanoic acid
B) 4 – carboxyl – 1 – butanol
C) 3 – hydroxy -1- propanoic acid
D) 4 – hydroxy -1 – butanoic acid
Answer:
D) 4 – hydroxy -1 – butanoic acid

Question 90.
Esters are dervivatives of ………………….
A) Ketones
B) Alcohols
C) Ethers
D) Carboxylic acids
Answer:
D) Carboxylic acids

Question 91.
The name of the structure
CH₃ – CH = C = CH₂ is
A) Butene
B) Buta – 1, 2 – diene
C) Butadiene
D) 1, 3 – butadiene
Answer:
B) Buta – 1, 2 – diene

Question 92.
CH₃ – NH – CH₃ is known as
A) primary amine
B) teritituted amine
C) secondary amine
D) quaternary ammonium salt
Answer:
C) secondary amine

Question 93.
The general formula of ester is
A) R – O – R
B) R – CO – R
C) R-COOR
D) R – CHO
Answer:
C) R-COOR

Question 94.
The functional group in ketone is
A)
B) —COOH
C) —OH
D) — COOR
Answer:
A)

Question 95.
The functional group which is recognised as alcohol is
A) —CHO
B) —OH
C) —CO
D) —COOH
Answer:
B) —OH

Question 96.
The unsaturated hydrocarbon that contains multiple bonds undergo the following type of reaction to become a saturated hydrocarbon.
A) combustion
B) addition
C) oxidation
D) substitution
Answer:
B) addition

Question 97.
If CH₃ – CH₂ – CH₂ – COOH is the IUPAC structure of carbon compound, then the carbon compound is
A) Butene
B) Butanol
C) Butanoic acid
D) But – 1 – ene
Answer:
C) Butanoic acid

Question 98.
If the carbon compound has many functional groups, then the order of preference while naming according to IUPAC nomenclature is
A) CONH₂ > CHO > NH₂ > — COOH
B) — COOH >CONH₂ > CHO NH₂
C) — CHO > CONH₂ > COOH > NH₂
D) — COOH > CHO > NH₂ > CONH₂
Answer:
B) — COOH >CONH₂ > CHO NH₂

Question 99.
The IUPAC name of
NH₂ – CH₂ – CHOH – CH₂ – COOH is
A) 1 – amino – 2 hydroxy butanoic acid
B) 3 – hydroxy – 4 – amino butanoic acid
C) 4 – amino – 3 – hydroxy butanoic acid
D) 1 – amino – 3 – hydroxy butyric acid
Answer:
C) 4 – amino – 3 – hydroxy butanoic acid

Question 100.
IUPAC name of Cl₃C – CH₂ – CHO
A) 3, 3, 3 – trichloro propanal
B) 3, 3, 3 – trichloro propanol
C) 1,1,1 – trichloro propanol
D) 1,1,1 – trichloro propanal
Answer:
A) 3, 3, 3 – trichloro propanal

Question 101.
IUPAC name of

A) chloro butane
B) 2 – chloro butane
C) 2, 3 – chloro butane
D) 2, 3 – dichloro butane
Answer:
D) 2, 3 – dichloro butane

Question 102.
Simplest ketone is
A) CH₃COCHg
B) CH₃COCH₂CH₃
c) CH₃COCH₂CH₂CH₃
D) CH₃CH₂CHO
Answer:
A) CH₃COCHg

Question 103.
Simplest acid is
A) Ethanoic acid
B) Methanoic acid
C) Propanoic acid
D) Butanoic acid
Answer:
B) Methanoic acid

Question 104.
The IUPAC name of following structure is

A) 2 – chloro – butanoic acid
B) 3 – chloro butanoic acid
C) 3 – chloro – pentanoic acid
D) 2 – chloro pentanoic acid
Answer:
B) 3 – chloro butanoic acid

CONCEPT – 5 : Some Important Carbon Compounds

Question 105.
Match the following:
a) Methyl chloride i) CHCl₃
b) Methylene chloride ii) CH₃Cl
c) Chloroform iii) CH₂Cl₂
d) Carbon tetra chloride iv) CCl₄
A) a → i, b → ii, c → iii, d → iv
B) a → iv, b → iii, c → ii, d → i
C) a → iv, b → iii, c → i, d → ii
D) a → ii, b → iii, c → i, d → iv
Answer:
D) a → ii, b → iii, c → i, d → iv

Question 106.
Match the following:
a) Ethanol i) Acetic acid
b) Ethanoic acid ii) Acetaldehyde
c) Ethanal iii) Chloroform
d) Trichloro iv) Ethyl alcohol
methane
A) a → i, b → ii, c → iii, d → iv
B) a → iv, b → iii, c → ii, d → iv
C) a → iii, b → ii, c. → iv, d → i
D) a → iv, b → i, c → ii, d → iii
Answer:
D) a → iv, b → i, c → ii, d → iii

Question 107.
Pure ethanol is called …………….
A) absolute alcohol
B) rectified spirit
C) denaturated spirit
D) None of these
Answer:
A) absolute alcohol

Question 108.
Denaturated alcohol is ethanol that contains impurities like ……………..
A) Methanol
B) Methyl isobutyl ketone
C) Aviation gasoline
D) All of these
Answer:
D) All of these

Question 109.
When sodium metal is dropped in ethanol ………………. gas will be released.
A) Oxygen
B) Hydrogen
C) Chlorine
D) Nitrogen
Answer:
B) Hydrogen

Question 110.
The product that is formed by dehydration of ethanol in concentrated sulphuric acid is ……………….
A) Ethane
B) Ethene
C) Ethyne
D) Ethanal
Answer:
B) Ethene

Question 111.
Which of the four tubes containing
following chemicals show the brisk effervescence when dilute acetic acid is added to them ?
i) KOH
ii) NaHCO₃
iii) K₂CO₃
iv) NaCl
A) i & ii
B) ii & iii
C) i&iv
D) i & iii
Answer:
B) ii & iii

Question 112.
A sweet odour substance formed by reaction of an alcohol and carboxylic acid is ……………………..
A) Ether
B) Aldehyde
C) Ketone
D) Ester
Answer:
D) Ester

Question 113.
Which of the following solution of acetic acid in water can be used as preservative.
A) 5 -10 %
B) 10 -15 %
C) 15 – 20 %
D) 100 %
Answer:
A) 5 -10 %

Question 114.
Acetic acid, when dissolved in water, dissociates into ions reversibly because it is a
A) weak acid
B) strong acid
C) weak base
D) strong base
Answer:
A) weak acid

Question 115.
2 ml of ethanoic acid was taken in three test tubes A, B and C and 2 ml, 4 ml and 8 ml water was added to them respectively. A clean solution is obtained in
A) Test tube A only
B) Test tubes A & B only
C) Test tubes B & C only
D) All the test tubes
Answer:
D) All the test tubes

Question 116.
If 2 ml of acetic acid is added slowly in drops to 5 ml of water then we will notice
A) the acid forms a separate layer on the top of water
B) water forms a separate layer on the top of the acid
C) formation of clear and homogeneous solution
D) formation of pink and clear solution
Answer:
C) formation of clear and homogeneous solution

Question 117.
A few drops of ethanoic acid were added to sodium carbonate. The possible results of the reaction :
A) A hissing sound was evolved
B) Brown fumes evolved
C) Brisk effervescence occurred
D) A pungent smelling gas evolved
Answer:
C) Brisk effervescence occurred

Question 118.
When acetic acid reacts with ethyl o alcohol, we add coiic.H₂S0₄ . It acts as and the process is called
A) oxidizing agent, saponification
B) dehydrating agent, esterification
C) reducing agent, esterification
D) acid and esterification
Answer:
B) dehydrating agent, esterification

Question 119.
The strength of acids may be expressed in terms of
A) H⁺ ion concentration
B) pH
C) PK_a
D) all of these
Answer:
D) all of these

Question 120.
Sodium or potassium salt of fatty acid is……
A) soap
B) detergent
C) indicator
D) soda
Answer:
A) soap

Question 121.
Match the following
a) Palmitric acid — i) C₁₇H₃₅COOH
b) Stearic acid — ii) C₁₇H₃₃COOH
c) Oleic acid — iii) C₁₇H₃₁COOH
A) a → i, b → ii, c → iii
B) a → iii, b ii, c → i
C) a → iii, b → i, c → ii
D) a → ii, b → iii, c → i ‘
Answer:
C) a → iii, b → i, c → ii

Question 122.
Alkaline hydrolysis of tri esters of higher fatty acids producing soaps is called
A) esterification
B) hydrolysis
C) saponification
D) neutralization
Answer:
C) saponification

Question 123.
Ravi added acid to the metal hydrogen carbonate and observed the gas evolved. The evolved gasis
A) O₂
B) N₂
C) H₂
D) CO₂
Answer:
D) CO₂

Question 124.
The carboxylic acid used to preserve pickles is
A) Methanoic acid
B) Propanoic acid
C) Ethanoic acid
D) Butanoic acid
Answer:
C) Ethanoic acid

Question 125.
CH₃ — CH₂ — OH reacts with alkaline KMnO₄ and heats to form first the compound A, which futher oxidises to form a compound B. The name of compound B is
A) Ethanol
B) Ethanal .
C) Formaldehyde
D) Acetic acid
Answer:
D) Acetic acid

Question 126.
But – 2 – yne reacts with H₂ in the presence of ‘NT catalyst to form But -1 – ene. This reaction is an example of ………………….
A) substitution reaction
B) addition reaction
C) elimination reaction
D) rearrangement reaction
Answer:
B) addition reaction

Question 127.
Which of the following organic compounds undergoes substitution reaction ?
A) Alkanes
B) Alkenes
C) Alkynes
D) All
Answer:
A) Alkanes

Question 128.
Which of the following substitution products is not formed when methane reacts with chlorine in sunlight ?
A) chloroform
B) carbon chloride
C) methylene chloride
D) ethyl chloride
Answer:
D) ethyl chloride

Question 129.
The process of conversion of starch and sugar into ethanol by using enzymes is called
A) Fermentation
B) Esterification
Q Carbonization
D) Pyrolysis
Answer:
A) Fermentation

Question 130.
The sweet odour substance formed by the reaction of an alcohol and carboxylic acid is
A) ester
B) amine
C) ether
D) aldehyde
Answer:
A) ester

Question 131.
The general formula of alcohol is
A) C_nH_2n+1OH
B) C_nH_2n+1NH₂
C) C_nH_2n+1CH0
D)(C_nH_2n+1)₂O
Answer:
A) C_nH_2n+1OH

Question 132.
In combustion of alkane the heat energy is
A) absorbed
B) liberated
C) neither absorbed nor liberated
D) depends on alkane
Answer:
B) liberated

CONCEPT VI: Soap – Saponification Micelle

Question 133.
A spherical aggregate of soap molecule in water is called …………….
A) nucleus
B) cell nucleus
C) micelle
D) none of these
Answer:
C) micelle

Question 134.
CMC means
A) Critical Molar Concentration
B) Conical Molar Concentration
C) Critical Micelle Concentration
D) Conical Micelle Concentration
Answer:
C) Critical Micelle Concentration

Question 135.
In true solution the solute particle diameter is
A) more than 1 nm
B) less than 1 nm
C) equal to 1nm
D) none of these
Answer:
B) less than 1 nm

Question 136.
The polar end in micelle ……………… in nature.
A) hydrophilic
B) hydrophobic
C) isochoric
D) isothermal
Answer:
A) hydrophilic

Question 137.
The non polar end in micelle is ……………. in nature.
A) hydrophilic
B) hydrophobic
C) isochoric
D) Isothermal
Answer:
B) hydrophobic

Question 138.
The carboxyl end in micelle is …………….. in nature.
A) polar
B) non- polar
C) both
D) none of these
Answer:
A) polar

Question 139.
The hydrocarbon chain in micelle is ……………. in nature.
A) polar
B) non-polar
C) both
D) none of these
Answer:
B) non-polar