Question

The LPG supplied to our homes is mixed with a gas that has an unpleasant smell. Explain why.
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Answer 1

Explanation:

Liquefied Gas is heavier than air and can therefore accumulate above the ground. ... It is common practice to add a foul smelling odorant to the gas in order to detect leaks and reduce the risk of explosions. LPG is non toxic but highly flammable.

Answer 2

Answer:

An additive, mercaptan, is mixed in to give LPG a distinctive and unpleasant smell, making leaks readily detectable. The concentration of the added mercaptan is such that an LPG leak can be detected when the concentration is below the lower limit of flammability.

Explanation:

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