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Question

Alkynes are less reactive than alkenes towards addition of Br2 because.

A
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B
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C
Both are equally stable
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D
Original statement is incorrect
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Solution

The correct option is A
Alkenes are more reactive than alkynes towards electrophilic addition reaction.
This is due to formation of highly strained bridged carbocation (3 membered ring with a double bond). Also, the C atom in alkyne is more electronegative (more s character) due to which, it tightly holds π electrons. Hence, the correct answer will be option (a).


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