Environmental Issues Class 12 MCQs Questions with Answers

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

2. Common indicator organism of water pollution is:

3. Natural air pollutant are:

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

5. Acid Rain comes under which type of pollution?

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

7. The greenhouse gases are

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

9. Nutrient enrichment of water bodies causes:

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

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

12. DDT can cause

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

14. Global warming can be controlled by__________

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

16. BOD in river water_________

17. The powder of recycled modified plastic is called

18. Act formulated in 1996 was:

19. Which metal inactivates a catalytic converter?

20. The Chipko movement was launched for protection of_________