(50) According to Central Pollution Control Board (CPCB), particulate size _______ micrometers or less in diameter are responsible for causing the greatest harm to human health. (a) 0.5 (b) 2.5 (c) 5 (d) 10
option B. According to the Central Pollution Control Board (CPCB), debris of 2.five micrometer and lesser diameter are maximum dangerous to human fitness as they could byskip deep into the lungs inflicting respiratory and breathing problems.
