Assertion -Aldol condensation can be catalysed both by acids and bases- Reason- - Hydroxy aldehydes or ketones readily undergo acid catalysed dehydration-

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Standard XII

Chemistry

Decarboxylation

Assertion :Al...

Question

Assertion :Aldol condensation can be catalysed both by acids and bases. Reason: $β$ Hydroxy aldehydes or ketones readily undergo acid catalysed dehydration.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
Aldol condensation can be catalysed both by acids and bases. The alpha H atom is acidic in nature.
$β$ Hydroxy aldehydes or ketones readily undergo acid catalysed dehydration to form alpha beta unsaturated carbonyl compound. Alpha beta unsaturated carbonyl compound is stabilised as the newly formed $C = C$ double bond is conjugated with carbonyl group.
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion :Aldol condensation can be catalysed both by acids and bases. Reason: β Hydroxy aldehydes or ketones readily undergo acid catalysed dehydration.

Assertion :Aldol condensation can be catalysed both by acids and bases. Reason: $β$ Hydroxy aldehydes or ketones readily undergo acid catalysed dehydration.