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Question

Which one of the following undergoes iodoform test?

A
Propanal
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B
Ethanol
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C
Benzophenone
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D
Benzaldehyde
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E
Phenol
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Solution

The correct option is D Ethanol
Those compound which contain O||CCH3 group gives iodoform test. So, CH3O||CH (oxidation product of ethanol, CH3CH2OH) gives iodoform test. Ethanol is the only primary alcohol to give the triiodomethane (iodoform) reaction.
Option B is correct.

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