Question

Why is the leakage of LPG detected easily although it is odourless? State the steps to be taken in case its leakage is detected in the kitchen.

Answer 1

Liquefied petroleum gas (LPG) is odourless, but to detect leakage of the gas, a small quantity of strong-smelling ethyl mercaptan (C₂H₅SH) is added to it. Ethyl mercaptan has a foul smell resembling that of hydrogen sulphide gas, which can be easily detected.
 
The following steps are to be taken when leakage of LPG is detected in the kitchen.
 a) Lighted matchsticks and other burning substances should be kept away.
 b) The knob of the gas stove must be closed.
 c) The valve of the gas cylinder should be checked and changed immediately if any damage is found.