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Question:

The major product of the following reaction is: CH3CH=CHCO2CH3

CH3CH2CH2CHO

CH3CH2CH2CO2CH3

CH3CH2CH2CH2OH

CH3CH=CHCH2OH

Solution:

Correct option is B. CH3CH2CH2CO2CH3
LiAlH4 reduces ester but not double bond. Hence option B is correct.