Carboxylic Acid and Acid DerivativesHard

Question

3-Hydroxybutanal is found when X reacts with Y in dilute Z solution. What are X,Y and Z?.

Options

A.X - CH3CHO
Y - (CH3)2CO
Z - NaOH
B.X - CH3CHO
Y - CH3CHO
Z - NaCl
C.X - (CH3)2CO
Y - (CH3)2CO
Z - HCl
D.X - CH3CHO
Y - CH3CHO
Z - NaOH

Solution

The product obtained is This produuct is obtained when 2 molucles of CH3CHO are heated with concentrated alkali (NaOH)

[Note : The aldehydes having α - hydrogen atom on heatig with concentrated alkali give brown resinous mass; aldol condennsation]

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