As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m3.(μg-microgram)

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Question: As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m3.(μg-microgram)
[A].

10

[B].

90

[C].

800

[D].

750

Answer: Option B

Explanation:

No answer description available for this question.