Threshold limit value (TLV) of CO in air is __________ ppm. Options: A . &nbsp5 B . &nbsp50 C . &nbsp2000 D . &nbsp5000

Threshold limit value (TLV) of CO in air is _________

Question

Threshold limit value (TLV) of CO in air is __________ ppm.

Options:

A . 5

B . 50

C . 2000

D . 5000

Answer: Option B

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