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What is added to domestic gas cylinders, which gives a foul smell? Why? - Geography

Question

What is added to domestic gas cylinders, which gives a foul smell? Why?

Short Note

Solution

Butane is the major component of LPG, alongside propane and ethane. Although odourless, the LPG in our residential petrol cylinders emits a nasty odour. The addition of ethyl mercaptan, a foul-smelling gas, to LPG allows for immediate detection of cylinder leaks.

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Chapter 12: Conventional Sources of Energy - EXERCISES [Page 143]