Discussion
The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of
Answer: A
Ethyl mercaptan (ethanethiol, C2H5SH) is a compound of sulphur, added to LPG to give it a smell.
LPG is odourless, so a leak would otherwise go unnoticed until it reached an explosive concentration. The human nose detects mercaptan at a few parts per billion.
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