Most important indicator of air pollution is:
Ans. a.SO2 Chemical indicator of air pollution:Sulfur Dioxide: Best indicator of Air Pollution.Smoke or soiling index: Air strain in a filter paper measured through photoelectric meter.Grit and dust measurementAir pollution indexSoiling indexCoefficient of hazeBiological indicator of air pollution: Lichens
SO2
CO2
CO2
N2O
Epidemiology