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Question: The decreasing order of the ratio of HCN addition to compounds a to d is...

The decreasing order of the ratio of HCN addition to compounds a to d is

A

D > B > C > A

B

D > C > B > A

C

C > D > B > A

D

A > B > C > D

Answer

A > B > C > D

Explanation

Solution

As steric hinderance increases around carbonyl group, rate of nucleophilic addition reaction decreases.