JEE Main Chemistry question

Which of the following is an addition reaction?

(A)Cyclohexyl chloride + aq. KOH → cyclohexanol (substitution)
(B)Cyclohexene + Br₂/CCl₄ → *trans*-1,2-dibromocyclohexaneCorrect
(C)Benzene + conc. H₂SO₄ → benzenesulfonic acid (electrophilic aromatic substitution)
(D)All of the above

Answer: (B)

Solution

Bromine adds across cyclohexene's C=C double bond (via a bromonium-ion intermediate opened by Br⁻) to give the vicinal dibromide, with no atom lost from the ring — a clear addition reaction. (A) is a nucleophilic

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Question ID VK-139429