Q.

3 - Hydroxy butanal is formed when (X) reacts with (Y) in dilute (Z) solution. X, Y, Z are:

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a

X=CH3CHO     Y=CH3CHO     Z=NaOH

b

X=CH3CHO     Y=(CH3)2CO      Z=NaOH

c

X=(CH3)2CO    Y=(CH3)2CO      Z=HCl

d

X=CH3CHO     Y=CH3CHO      Z=NaCl

answer is D.

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Detailed Solution

Aldol condensation: When a base (NaOH) is present, the aldol condensation of two acetaldehyde molecules results in the formation of 3-hydroxy butanal.

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Hence, the correct option is (D) CH3CHO     CH3CHO     NaOH

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3 - Hydroxy butanal is formed when (X) reacts with (Y) in dilute (Z) solution. X, Y, Z are: