Air Pollution MCQs

The threshold limit of benzene is

December 29, 2021

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The threshold limit of benzene is

Q. The threshold limit of benzene is

15ppm
20ppm
25ppm
30ppm

Answer: 25ppm

The threshold limit of benzene is

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The threshold limit of benzene is

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Variety of life forms, expressed as a number of species in an area, known as

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