Assertion :Propene is more reactive than propyne towards addition of Br2 Reason: Propyne forms a less stable cyclic bromonium ion than propene.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Alkynes are less reactive than alkenes towards electrophilic addition reactions due to the compact C−C electron cloud. In case of Br2 addition in Propyne results in the formation of less stable cyclic bromonium ion than propene.