Question

Product "A" in the below chemical reaction is:

• A.
• B.
• C.
• D.

Answer 1

The correct option is D

It is addition reaction of $HBr$ to the alkene.
Initially the alkene attacks $H^{+}$ and for a stable carbocation intermediate. Formed carbocation undergo 1, 2- methyl shift to form more stable tertiary carbocation followed by $Br$ attack to give product 'A'.
Hence, option (d) is the correct answer.