According to Central Pollution Control Board (CPCB), which particulate size in diameter (in micrometers) of the air pollutants is responsible for greatest harm to human health ?
A. 2.5 or less
B. 1.5 or less
C. 1.0 or less
D. Between 2.5-5.3
Answer:A
According to Central Pollution Control Board (CPCB), which particulate size in diameter (in micrometers) of the air pollutants is responsible for greatest harm to human health ?
A. 2.5 or less B. 1.5 or less C. 1.0 or less D. Between 2.5-5.3