When acetaldehyde is treated with excess of acid then unsaturated product will be?

Alcohol

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Aldehyde

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Acid

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Alkyl halide

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Solution

The correct option is B Aldehyde
Acetaldehyde is basically 3-Hydroxybutanal. On heating, it with acid $E_{1}$ reaction will occur and But-3-en-1-al will be formed, which is an aldehyde.
Hence, option B is correct.

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