Chemistry-Alkenes

NEET Chemistry Alkenes Assertion Reason Question

Type: Assertion Reason-assertion-Medium-Class 11

Assertion (A): The addition of HBr to propene in the presence of peroxides results in 1-bromopropane. | Reason (R): The peroxide effect leads to anti-Markovnikov addition only with HBr and not with HCl or HI.

A

Both A and R are true and R is the correct explanation of A.

B

Both A and R are true but R is not the correct explanation of A.

C

A is true but R is false.

D

A is false but R is true.

Correct Answer

Option A

Detailed Explanation

The peroxide effect involves the addition of HBr to alkenes like propene, resulting in anti-Markovnikov addition to give 1-bromopropane. This effect is specific to HBr and does not occur with HCl or HI, as mentioned in the NCERT context.

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