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Solution


Q.

Number of carbocation from the following that are not stabilized by hyperconjugation is……….                 [2024]

Ans.

(5)

For hyperconjugation to occur in carbocations, carbon carrying positive charge should be connected to an sp3 hybridized carbon and that sp3 hybridized carbon should have at least one H atom (called as αH).
Out of given seven structures, hyperconjugation is possible only in the following two structures: