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Question

In which of the following compound the methylenic hydrogens are the most acidic?

A
CH3COCH2CH3
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B
CH3CH2COOC2H5
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C
CH3CH2CH(COOC2H5)2
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D
CH3COCH2CN
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Solution

The correct option is D CH3COCH2CN
Here cyanide group pulled the bond pair electron from the chain by the inductive (I effect). So, hydrogen of methyl group are because more acidic in nature. CH bond became labile due to pulling of electron by CN group.
1025855_992039_ans_97759e2cb75e46b4806de3b9cacfccc3.PNG

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