1. Which one of the following is biodegradable?

2. Match List-I with List-II and select the correct answer using the code given below the lists. List-I (Air Pollutant)
(a) Asbestos dust
(b) Lead
(c) Mercury
(d) Carbon monoxide List-II (Part affected)
1. Brain 2. Stomach
3. Lung 4. Blood stream Code
(a) (b) (c) (d)

3. In the acid rain, the rain water and snow is contaminated by which of the following pollutants?
1. Sulphur dioxide
2. Nitrogen oxide
3. Carbon dioxide
4. Methane Code

4. Photochemical smog is a resultant of the reaction among

5. Colourless gas coming out from motor vehicle and cigarette due to incomplete combustion is

6. Which of the following are some important pollutants released by the steel industry in India?
1. Oxides of sulphur
2. Oxides of nitrogen
3. Carbon monoxide
4. Carbon dioxide Select the correct answer using the code given below.

7. Which was the seasonal factor responsible for intense cold in Northern India in January, 2012?

8. Bhopal Gas Tragedy (leakage of methyl isocyanate 'MIC') accident happened on

9. Recently, 'oil zapper' was in the news. What is it?

10. Bioremediation means

11. Polythene bags cannot be destroyed because they are made of

12. Euro Norms place limits on the amount of an emission of gas in automobiles. The gas is

13. Which of the following is the reason behind the maximum noise pollution?

14. Which of the following is not a water pollutant?

15. Human-made pollutants are called

16. Acid rain is caused by

17. Concerning 'fly ash' produced by the power plants using coal as fuel, which of the following statements is/are correct?
1. Fly ash can be used in the production of bricks for building construction.
2. Fly ash can be used as a replacement for some of the Portland cement concrete.
3. Fly ash is made up of silicon dioxide and calcium oxide only, and does not contain any toxic elements. Select the correct answer using the code given below.

18. Chernobyl accident is related with

19. Combustion of petrol in automobiles pollutes the air by producing following metal.

20. Which of the following countries suffer from the acid rains?
1. Canada 2. France
3. Norway 4. Germany Select the correct answer from the code given below.

21. Consider the following.
1. Carbon dioxide
2. Oxides of nitrogen
3. Oxides of sulphur Which of the given above is/are the emission/emissions from coal combustion at thermal power plants?

22. The gas which leaked from Union Carbide factory, Bhopal was

23. Carbon monoxide, emitted by vehicles which turn to carbon dioxide by the catalyst converter, whose ceramic disc is controlled by

24. Cigarette smoke contains

25. Bio-degradable pollutant is