Permissible safe limit (TLV) of _____________ toxic gas is 100-1000 pa – McqOptions

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1.	Permissible safe limit (TLV) of _____________ toxic gas is 100-1000 parts per million (ppm)?
A.	Highly
B.	Moderately
C.	Extremely
D.	Very extremely
Answer» C. Extremely

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