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01/11/2021 4:44 pm
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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?
(1) 1.0 or less
(2) 2.5 or less
(3) 5.2-2.5 less
(4) 1.5 or less
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01/11/2021 4:44 pm
Correct answer: (2) 2.5 or less