Threshold limit value (TLV) means maximum permissible/acceptable concentration.

Question

Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million).

Options:

A . 0.002

B . 0.2

C . 1.2

D . 4.8

Answer: Option B

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