Threshold limit value (TLV) means maximum permissible/acceptable conce – McqOptions

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1.	Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about ______________ ppm (parts per million)?
A.	0.002
B.	0.2
C.	1.2
D.	4.8
Answer» C. 1.2

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