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Question

Which of the following carbonyl gives 4-methyl pent -3-en-2-one on reaction with dilute NaOH solution with heating?

A
Acetaldehyde
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B
Acetone
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C
Formaldehyde
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D
Propanal
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Solution

The correct option is A Acetone
Acetone contains alpha hydrogen atom. hence, when it is heated with dil NaOH solution, it undergoes aldol condensation reaction to form 4-methyl pent -3-en-2-one .
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