Key Concepts, Issues, and Public Awareness

01 – Environment Content of Chapter:1.1 Definitions, Need of environmental studies 1.2 Segments of environment- Atmosphere,Hydrosphere,Lithosphere,Biosphere 1.3 Environmental issues- Green house effect,Climate change,Global warming,Acid Rain,Ozone layer depletion,nuclear accidents. 1.4 Concept of 4R( Reduce,Reuse,Recycle and Recover) 1.5 Public awareness about Environment. 1.Nuclear accidents _______ global temperature. a) Increase b) Decrease c) Multiply d) None Answer: - Option A Explanation:-Nuclear accidents causes decrease in temperature. 2.Environmental education is important only at a) Primary school stage b) Secondary school stage c) Collage stage d) All of the above Answer: - Option D Explanation:-Environmental education is important at all stage. 3.The 4Rs principle is applicable for… a) Public awareness b) Environmental protection c) Saving natural resources d) All of the above Answer: - Option D Explanation:-The 4Rs principle is applicable for Public awareness,Environmental protection and Saving natural resources 4.Ozone layer is found in .... a)Thermosphere b)Stratosphere c)Troposphere d)Mesosphere Answer: - Option B Explanation:-Ozone layer is found in Stratosphere. 5.Which one of the following is an abiotic component of the ecosystem? a) Bacteria b) plants c) humus d) Fungi Answer: - Option C Explanation:-Humus is an abiotic component of the ecosystem 6.Major cause of increment in population growth is...… a) decrease in birth rate b) decrease in mortality rate c) Illiteracy d) none of the above Answer: - Option D Explanation:-decrease in mortality rate is a Major cause of increment in population growth. 7.Zone consisting air, water and soil is known as.... a) Atmosphere b) Hydrosphere c) Biosphere d) Lithosphere Answer: - Option C Explanation:-Zone consisting air, water and soil is known asBiosphere. 8.Abiotic environment does not include a) Air b)Water c)Soil d)Plants Answer: - Option D Explanation:-Abiotic environment means non-living things. 9. Physical environment is also called as… a) Abiotic environment b) Biotic environment c) Man made environment d) Psychological environment Answer: - Option A Explanation:-Physical environment is also called asAbiotic environment 10.The production of biogas from the waste is includes in...… a) Reduce b) Reuse c) Recycle d) Recover Answer: - Option D Explanation:-The production of biogas from the waste is includes inRecover 11.___% of the Earth's surface is covered with water. a) 20 b) 80 c) 71 d) 100 Answer: - Option C Explanation:-71 % of the Earth's surface is covered with water. 12.Formation of Ozone is? a) Oxidation Reaction b) Reduction Reaction c) Photochemical Reaction d) None of the above Answer: - Option C Explanation:-Formation of Ozone isPhotochemical Reaction 13.The environment which has been modified by human a)Natural environment b)Anthropogenic environment c)Modern environment d)Urban environment Answer: - Option C Explanation:-The environment which has been modified by human is Anthropogenic environment 14.One of the following is not a type of environment. a)Physical environment b)Man made environment c)Social environment d)Hydrosphere Answer: - Option D Explanation:-Hydrosphere is not a type of environment. 15.O3 is known as… a)Atmosphere b)Ozone c)Oxygen d)All of these Answer: - Option B Explanation:-O3 is known as Ozone 16. Environmental education emphasises on _________ a)Air b) Water c) Environmental issues d) None Answer: - Option C Explanation:-Environmental education emphasises on Environmental issues