AP 7th Class Science Bits Chapter 14 Water – Too Little To Waste with Answers

Practice the AP 7th Class Science Bits with Answers Chapter 14 Water – Too Little To Waste on a regular basis so that you can attempt exams with utmost confidence.

AP State Syllabus 7th Class Science Bits 14th Lesson Water – Too Little To Waste with Answers

Choose the correct answer.

Question 1.
Worlds water day is on
A) 22nd March
B) 20th March
C) 22nd April
D) 20th April
Answer:
A) 22nd March

Question 2.
Percentage of fresh water available on the globe
A) 97%
B) 20%
C) 10%
D) 1%
Answer:
D) 1%

Question 3.
………… alter the natural flow of rivers leading to water scarcity.
A) Rains
B) Dams
C) Bridges
D) None
Answer:
B) Dams

Question 4.
Organic impurities present in waste water
A) Pesticides
B) Nitrates
C) Phosphates
D) Metals
Answer:
A) Pesticides

Question 5.
Inorganic impurities present in waste water
A) Pesticides
B) Oil
C) Urea
D) Phosphates
Answer:
D) Phosphates

Question 6.
Dried sludge is used as
A) Waste material
B) Manure
C) Cattle food
D) Fuel
Answer:
B) Manure

Question 7.
Bacteria in water cause the disease.
A) Cold
B) Fever
C) Body Pains
D) Cholera
Answer:
D) Cholera

Question 8.
Chemical used to disinfect water.
A) Oxygen
B) Chlorine
C) Fluorine
D) Nitrogen
Answer:
B) Chlorine

Question 9.
Essential for metabolic activity
A) CO2
B) Rain
C) Water
D) Minerals
Answer:
C) Water

Question 10.
………… present in the water cause diseases.
A) Dust
B) Microbes
C) Dirt
D) Salts
Answer:
B) Microbes

Question 11.
Water let out from atomic reactors is fatal to
A) Jungle life
B) Hill beings
C) Marine life
D) Human life
Answer:
C) Marine life

Question 12.
Agro industry use excessive
A) Fungicides
B) Water
C) Labour
D) Money
Answer:
A) Fungicides

Question 13.
Chlorine passing into water is called
A) Aeration
B) Chlorination
C) Purification
D) Filteration
Answer:
B) Chlorination

Question 14.
Pumping of water into air for purification is called
A) Chlorination
B) Purification
C) Aeration
D) Filteration
Answer:
C) Aeration

Question 15.
Vegetable waste is a
A) Inorganic Impurity
B) Organic Impurity
C) Microbes
D) None
Answer:
B) Organic Impurity

Question 16.
Nallavally is the oldest Vana Samrakshana Samithi of which district?
A) Khammam
B) Krishna
C) Karimnagar
D) Medak
Answer:
D) Medak

Question 17.
The picture indicates that
AP 7th Class Science Bits Chapter 14 Water – Too Little To Waste with Answers 1
A) Water pollution
B) Floods
C) Water scarcity
D) Rain
Answer:
C) Water scarcity

Question 18.
Identify the structure.
AP 7th Class Science Bits Chapter 14 Water – Too Little To Waste with Answers 2
A) Sludge tank
B) Seawage tank
C) Bar screens
D) Grit
Answer:
C) Bar screens

Question 19.
Identify this. This is a
AP 7th Class Science Bits Chapter 14 Water – Too Little To Waste with Answers 3
A) Petrol tank
B) Water tank
C) Milk tank
D) Septic tank
Answer:
D) Septic tank

Question 20.
Waste water released by different users are collectively called
A) Mud
B) Sewage
C) Sludge
D) None of these
Answer:
B) Sewage

Question 21.
Sewage contain
A) suspended impurities
B) dissolved impurities
C) disease causing bacteria
D) all of these
Answer:
D) all of these

Question 22.
The process involved in treatment of waste water
A) physical process
B) chemical process
C) biological process
D) all of these
Answer:
D) all of these

Question 23.
Which gas kills harmful disease causing organisms in waste water?
A) Fluorine
B) Chlorine
C) Oxygen
D) Bromine
Answer:
B) Chlorine

Question 24.
Microbes of cholera and typhoid grow more in
A) river water
B) tank water
C) well water
D) pond water
Answer:
C) well water

Question 25.
How much percentage of fresh water exist in glaciers?
A) 1%
B) 2%
C) 3%
D) 7%
Answer:
B) 2%

Question 26.
Activated sludge contain the following percentage of water
A) 1%
B) 2%
C) 97%
D) 100%
Answer:
C) 97%

Question 27.
Cleaning of water is a process of removing
A) harmful organisms
B) harmful impurities
C) dissolved & suspended impurities
D) All of these
Answer:
D) All of these

Question 28.
Dried sludge is used as
A) manure
B) pesticide
C) water purifier
D) detergent
Answer:
A) manure

Question 29.
Pumping of water into air for purification is called
A) chlorination
B) purification
C) aeration
D) filtration
Answer:
C) aeration

Question 30.
Which of the component is essential for metabolic activity?
A) carbon dioxide
B) rain
C) water
D) minerals
Answer:
C) water

Question 31.
It is an example of organic impurities
A) Human faces
B) Nitrates
C) Bacteria
D) Microbes
Answer:
A) Human faces

Question 32.
The following is an organic impurity came from agriculture industry
A) Urea
B) Pesticides
C) Herbicides
D) All of these
Answer:
D) All of these

Question 33.
The instrument used to remove oil and grease in sludge is
A) Scraper
B) Skimmer
C) Floater
D) Bar screen
Answer:
B) Skimmer

Question 34.
The following is a water conservation construction
A) Percolation tank
B) Contour trench
C) Check dam
D) All of these
Answer:
D) All of these

Question 35.
The following is a rainfed crop
A) Jowar
B) Redgram
C) Green gram
D) All of these
Answer:
D) All of these

Question 36.
Inorganic pollutants in sewage are
A) Nitrates
B) Phosphates
C) Metals
D) All the above
Answer:
D) All the above

Question 37.
World water day is observed on every year from 2005.
A) 22nd March
B) 22nd December
C) 20th June
D) 2nd May
Answer:
A) 22nd March

Question 38.
Sita collects the water that used after cleaning rice, dal and vegetables in the kitchen and uses it to water the garden. This can be called
A) Stagnation of water
B) Reuse of water
C) Storing of water
D) Recovering of water
Answer:
B) Reuse of water