{"id":35440,"date":"2022-09-14T09:56:04","date_gmt":"2022-09-14T04:26:04","guid":{"rendered":"https:\/\/apboardsolutions.guru\/?p=35440"},"modified":"2022-09-14T09:56:04","modified_gmt":"2022-09-14T04:26:04","slug":"ap-inter-1st-year-chemistry-study-material-chapter-12","status":"publish","type":"post","link":"https:\/\/apboardsolutions.guru\/ap-inter-1st-year-chemistry-study-material-chapter-12\/","title":{"rendered":"AP Inter 1st Year Chemistry Study Material Chapter 12 Environmental Chemistry"},"content":{"rendered":"

Andhra Pradesh BIEAP AP Inter 1st Year Chemistry Study Material<\/a> 12th Lesson Environmental Chemistry Textbook Questions and Answers.<\/p>\n

AP Inter 1st Year Chemistry Study Material 12th Lesson Environmental Chemistry<\/h2>\n

Very Short Answer Questions<\/span><\/p>\n

Question 1.
\nDefine the terms atmosphere and biosphere.
\nAnswer:
\nAtmosphere: The blanket of gases present around the earth is called the atmosphere. It maintains the heat balance on earth. The atmosphere contains nitrogen and oxygen in large proportions.<\/p>\n

Biosphere: Living organisms like plants, animals, and human beings constitute the biosphere.
\nThe biosphere is related to other environment segments.<\/p>\n

Question 2.
\nExplain the terms Lithosphere and Hydrosphere.
\nAnswer:
\nLithosphere : The outer mantle of the solid earth consists of minerals present in earth gust and soil. The earth inner surface contains minerals and deeper inner layers contain natural gas and soil. Mountains and hills these are all constitutes lithosphere.<\/p>\n

Hydrosphere : All the natural water resources together constitute the hydrosphere. Hydrosphere include oceans, seas, rivers, lakes, streams etc.<\/p>\n

\"AP<\/p>\n

Question 3.
\nDefine the term Soil Pollution.
\nAnswer:
\nThe concentration (or) accumulation of natural bodies is called as soil. Soil gets polluted due to industrial wastes, urban wastes, agricultural pollutants, chemical, radio active pollutants etc.<\/p>\n

Question 4.
\nWhat is Chemical Oxygen demand (COD).\u00a0 \u00a0 \u00a0[A.P. Mar. 16] [Mar. 14]
\nAnswer:
\nThe amount of oxygen required to oxidise organic substances present in polluted water is called Chemical Oxygen Demand (COD).
\nIt is an index for amount of organic substances present in water.<\/p>\n

Question 5.
\nWhat is Bio Chemical Oxygen Demand (BOD) ? [A.P. Mar. 16] [Mar. 14]
\nAnswer:
\nThe amount of oxygen used by the suitable micro organisms present in water during five days at 20\u00b0 C is called as Bio Chemical Oxygen Demand (BOD).<\/p>\n

Question 6.
\nWhat are Troposphere and Stratosphere ?
\nAnswer:
\nTroposphere : The major portion of the atmosphere which contains air is called troposphere.
\nIt is present 0-11 Km from the earth.<\/p>\n

Stratosphere : Stratosphere present 11 – 50 Km from the earth and it mainly contains ozone layer. It absorbs the harmful UV radiations coming from sun.<\/p>\n

Question 7.
\nName the major particulate pollutants present in Troposphere.
\nAnswer:
\nThe major particulate pollutants present in troposphere are dust, mist, fumes, smoke, smog etc.<\/p>\n

\"AP<\/p>\n

Question 8.
\nList out four Gaseous Pollutants present in the polluted air.
\nAnswer:
\nOxides of Sulphur,Nitrogen and Carbon, Ozone, Hydrocarbons etc., are gaseous pollutants present in polluted air.<\/p>\n

Question 9.
\nGreen house effect is caused by and gases.
\nAnswer:
\nGreen house effect is caused by gases such as CO2<\/sub>, CH4<\/sub>, O3<\/sub>, CFCs (Chloro Fluoro Carbons) and water vapour in the atmosphere.<\/p>\n

Question 10.
\nWhich oxides cause acid rain ? and What is its pH value ? [Mar. 13]
\nAnswer<\/p>\n