TEST PAPER 32 : CHAPTER 18 : ENVIRONMENT & ENVIRONMENTAL PROBLEMS : 25 MARKS

There are 13 questions in all and time limit is 45 minutes.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark each, Total marks 3]

1. Which one is a greenhouse gas ?
   
   
   
   1. Methane
   2. Oxygen
   3. Nitrogen
   4. Hydrogen
      
   
   
2. World Environment Day is observed on...
   
   
   
   1. 5th March
   2. 15th April
   3. 15th May
   4. 5th June
      
   
   
3. ______ is not an environmental problem.
   
   
   
   1. Wastage of water
   2. Conservation of water
   3. Deforestation
   4. Land erosion
      
   
   

   SECTION - B : ANSWER IN SHORT : [1 mark each, Total marks 3]
   

4. What is studied in environmental biology ?
5. Mention the major reason for environmental problems.
6. What is eutrophication ?
   
   

   SECTION - C : ANSWER IN BRIEF : [2 marks each, Total marks 8]
   

7. Mention types of environment with examples.
8. Explain : Acid rain.
9. Write about biodegradable pollutants.
10. Explain : Environmental balance.
    
    

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each, Total marks 6]
    

11. Describe harmful effects of water pollution.
12. What is air pollution ? Describe methods of controlling gaseous pollutants.
    
    

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total marks 5]
    

13. Describe prevention and control of water pollution.