Environmental Issues Class 12 MCQs Questions with Answers

1. The dB is a standard abbreviation used for the quantitative expression of:

2. Nutrient enrichment of water bodies causes:

3. Act formulated in 1996 was:

4. Presence of large amount of nutrients in water cause excessive growth of

5. The Chipko movement was launched for protection of_________

6. The greenhouse gases are

7. BOD in river water_________

8.  In an area where DDT had been used extensively, the bird population declined significantly due to_________

9.  A river with inflow of domestic sewage rich in organic waste may result__________

10. Acid Rain comes under which type of pollution?

11. Bhopal gas tragedy of 1884 took place because methyl isocyanate reacted with:

12. Global warming can be controlled by__________

13. Which metal inactivates a catalytic converter?

14. The agents that bring undesirable changes in the environment arc called

15. Rain is called acid rain, its pH is below:

16. The powder of recycled modified plastic is called

17. Natural air pollutant are:

18. DDT can cause

19. Eutrophication of water bodies leading to killing of fishes is mainly due to non-availability of_________

20. Common indicator organism of water pollution is: