Smoke index is used for -: (A) Air pollution, (B) Soundpollution, (C) Excreta, (D) None
Answer is A. Ans. is 'a' i.e., Air pollution Monitoring of air pollutiono Monitoring of air pollution is done by : -Sulphur dioxide.Gritt and dust measurement.Co-efficient of haze.Air pollution index.Smoke or soiling index