A gas is termed as non-toxic, if its maximum permissible concentratio – McqOptions

MCQOPTIONS

1.	A gas is termed as non-toxic, if its maximum permissible concentration (TLV) ranges from __________ ppm.
A.	1000 to 2000
B.	3000 to 6000
C.	6000 to 9000
D.	10000 to 100000
Answer» E.

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