Chemistry - Aromatic Hydrocarbon Question with Solution | TestHub

Benzenesulphonic acid on heating with dil. H₂SO₄ undergoes desulphonation, so A = dil. H₂SO₄, Δ and B = benzene.

Benzene is then brominated (Br₂/FeBr₃), giving bromobenzene. Hence statement C (Br₂/CCl₄) is incorrect because it cannot brominate benzene without a catalyst.

Bromobenzene undergoes Friedel–Crafts acylation with (CH₃CO)₂O/AlCl₃.

Br is an ortho/para-directing group; due to less steric hindrance, the para-acetyl product is formed majorly.

Therefore structure D shown in option (A) is correct, while structure B shown in option (D) is incorrect.