Gk of environment

1. Greenhouse gases are...

Ans: co2,ch4,cfc,o3 and h2o vapour.

2. Biochemical oxygen demand measures.

Ans: Dissolved oxygen needed by microbes to decompose organic.

3. Ozone layer is being depleted by.

Ans: Chlorofluorocarbon.

4. The largest source of air pollution in metropolitan cities is.

Ans: Automobiles.

5. The region of the earth comprising water is known as.

Ans: Hydrosphere.

6. Planting of trees is called.

Ans: Afforestation.

7. Deforestation generally decreases.

Ans: Rainfall.

8. The chipko movement continues under the leadership of .

Ans: Sunderlal Bahuguna.

9. Greenpeace started its functioning since.

Ans: 1971.

10. The study of interactions between living organisms and environment is called as.

Ans: Ecology.

11.The term "ecology" was first defined by .

Ans: Haeckel.

12. The role played by an organism in the ecological system is known as.

Ans: Niche.

13.The environment modified by human activities is called.

Ans: Anthropogenic environment .

14. Aerial organisms are found in.

Ans: Atomosphere.

15. The food production center of the biosphere is .

Ans: Producer.

16. Automobile exhausts consist of .

Ans: Hydrocarbons,Carbon monoxide and Nitric Oxide.

17. Gas leaked in the Bhopal tragedy was.

Ans:Methyl isocyanate.

18. Ozone layer occurs in.

Ans: Stratosphere.

19. Taj mahal is threatened due to.

Ans: Sulphur Dioxide.

20. Chernobyl disaster occurred due to.

Ans: None of the above.