Environmental Issues Class 12 MCQs Questions with Answers

1. Nutrient enrichment of water bodies causes:

2. Global warming can be controlled by__________

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

4. The greenhouse gases are

5. Common indicator organism of water pollution is:

6. The powder of recycled modified plastic is called

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

8. Which metal inactivates a catalytic converter?

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

10. DDT can cause

11. Act formulated in 1996 was:

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

13. Natural air pollutant are:

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

15. The Chipko movement was launched for protection of_________

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

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

18. Acid Rain comes under which type of pollution?

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

20. BOD in river water_________