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Reaction of HBr with propene in the presence of peroxide gives:

1. isopropyl bromide
2. 3-bromyl propane
3. allyl bromide
4. n-propyl bromide

Correct answer: n-propyl bromide

Solution

In the presence of peroxide, HBr adds to propene via the anti-Markovnikov rule, leading to the formation of n-propyl bromide as the major product.

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