'Soiling Index' is an indicator of
Ans. b (Air pollution) (Ref. Park Textbook of Preventive & Social Medicine 22nd/pg. 683)SOILING INDEX (Smoke Index) is indicator of air pollution.Other indicators of air pollution are:# SO2# Grit & Dust Measurement# Coefficient of Haze# Air Pollution IndexNote: The best indicators of air pollution are sulphur dioxide, smoke and suspended particles.
Water pollution
Air pollution
Soil pollution
Food pollution
Environment and Health