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1. |
Which of the following statements are correct ? (i) Benzene hexachloride (BHC) is a non-biodegradable pollutant. (ii) Anthropogenic air pollutants are natural in origin. (iii) Carbon monoxide is a primary air pollutant. (iv) Sulphur dioxide causes brown air effect during traffic congestion in cities.A. a,bB. a,cC. b,cD. c,d |
Answer» Correct Answer - B | |