As per the world health organisation (WHO) specification, the maximum – McqOptions

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1.	As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ ?g/m 3 .(?g-microgram)
A.	10
B.	90
C.	800
D.	750
Answer» C. 800

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