Regulations & SafetyQuestion 52 of 240
Which toxic gas is a well-known decomposition product formed when a chlorinated refrigerant contacts a flame?
a.Oxygen
b.Helium
c.Nitrogen
d.Phosgene
Explanation
Phosgene is a highly toxic gas that can form when a chlorinated refrigerant such as R-22 contacts an open flame or hot surface, and even small amounts are dangerous to inhale. Oxygen, helium, and nitrogen are not toxic decomposition products of refrigerant. The presence of a sharp, acrid odor near hot work is a warning sign to stop and ventilate.
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