Question

Which of the following are true?
(i) Benzene hexachloride 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. (i) and (iii) only
• B. (i) and (ii) only
• C. (ii) and (iii) only
• D. (ii) and (iv) only
• E. (i) and (iv) only

Answer 1

The correct option is A (i) and (iii) only

In traffic-congested city air, nitrogen oxides produce brown air or reddish-brown haze. The pollutant that does not get degraded or broken down into the harmless material is a nondegradable pollutant example Benzene Hexachloride (BHC). Anthropogenic pollution is man-made pollution resulting from human activities like burning fossil fuel, deforestation, mining, sewage etc. A primary air pollutant is a pollutant that persists in the environment in the form it is produced example carbon monoxide.