What particulate size is responsible for causing the greatest harm to human health according to CPCB?

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2.5 micrometres or less in diameter

2.5 micrometres or more in diameter

More than 3.0 micrometres in diameter

More than 5.0 micrometres in diameter

answer is A.

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Detailed Solution

Recently, we have realised the dangers of particulate matter that are very very small and are not removed by the electrostatic precipitators. According to Central Pollution Control Board (CPCB), particulate size 2.5 micrometers or less in diameter (PM 2.5) are responsible for causing the greatest harm to human health. These fine particulates can be inhaled deep into the lungs and can cause breathing and respiratory symptoms, irritation, inflammations, damage to the lungs, and premature deaths.

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