Dehydration of glycerol gives:

propane

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propene

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acrolein

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benzene

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Solution

The correct option is C acrolein
Dehydration of glycerol gives acrolein
When glycerol is heated with sulphuric acid or $K H S O_{4}$ , it is followed by dehydration to give acrolein.
Acrolein is a compound with bad odour.
It is a detection test of glycerol.

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