Kerala PSC Environmental Science Previous Question Paper – 069/2015

The Commission publishes this paper without an answer key, so no answers are shown.

1. Chemolithotrophs derive energy from :

4. Energy available in fuels is stored as :

5. Malaria is caused by ; ; ¥

6. The Kyoto protocol entered into force in :

7. Which one of the following trees has medicinal value?

8. Animals that feed on relatively large pieces of dead organic matter are called :

9. The freshwater lake that is the source of daily water use for Kollam is ;

10. A biodiversity hotspot in Kerala is:

11. The primary source of organic pollution in fresh water bodies is : :

12. Which one of the green house gases has the shortest residence time in the atmosphere?

13. Which of the following cities is worst effected by urban smog in recent times? :

14. Radiation can act as a mutagen because it: ;

15. Among the most impértant characteristics of chemical in’ determining their environmental
risks is/are ; , :

16. What is largest contributor to carbon dioxide emission in India ?. 3

17. General limiting factor for primary productivity in aquatic ecosystem is :

18. The Montreal Protocol called for the complete phase out of :

19. The MSW of an Indian town has on an average of ————- biodegradable matter.

20. The major cause behind the damage of historical buildings like Taj Mahal is :

21. The process of establishing a forest in a non-forest area is said to be:

22. The greatest threat tothe sustainability of agriculture in India is :

23. The major source of electric power generation in India is :

24. Biomedical waste may be disposed by :

25. Which of the following is likely characteristic of hazardous waste?

26. The largest coral reef in the world is found near the coast of :
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28. North east monsoon brings maximum rainfall to :

29. A test widely used in treatment facilities along with BOD to indicate toxic substances or
biologically resistant prganic substances is :

30. The role of NzO in the stratosphere is to:

31. What are the major reasons for the accumulation of e-waste in recent years?

33. Elaborate on household hazardous wastes and its disposal.

34. Write notes on the impact Ozone depletion and Global warming. :

35. Discuss in detail the importance of wetlands.

36. Comment on biomagnifications of pesticides through food chain.

37. Write down the physiological and psychological effects of noise pollution on human beings.

38. What is meant by biodiversity hotspot? How many biodiversity hotspots are there in Inidia
and name them?

82. Explain ‘photochemical smog’ and its effects. |