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Question : According to the central pollution control Board PM 2.5 are responsible for causing the greatest harm to human health. PM 2.5 stands for

Answer»

PARTICULATE matter which are 2.5 MICROMETERS or less in DIAMETER
Particulate matter which are 2.5 micrometers or more in diameter
Particulate matter which are 2.5 nanometersor less in diameter
Particulate matter which are 2.5 nanometersor more in diameter

ANSWER :A


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