Question

The chemical formula of the strong-smelling substance that is mixed in LPG is :
(a) C2H2SH
(b) C2H5SH
(c) CH5SH
(d) C2SH3

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Answer

(b) C2H5SH

Reason — LPG is stored in gas cylinders after mixing a strong smelling substance called ethyl mercaptan (C2H5SH) so that the gas leakage, if any, from the cylinder can easily be detected.

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