Threshold limit value (TLV) i.e., the maximum permissible safe limit – McqOptions

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1.	Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm.
A.	<1
B.	10-100
C.	100-200
D.	100-1000
Answer» B. 10-100

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