JEE Main 2024 — 4 April, Shift 1 — Question 75

Reaction A is Incorrect: Friedel-Crafts acylation of benzene with benzoyl chloride in the presence of anhydrous $\mathrm{AlCl_3}$ gives benzophenone ($\mathrm{C_6H_5COC_6H_5}$), not diphenylmethane.

Reaction B is Incorrect: Benzoyl chloride on reduction with $\mathrm{H_2 / Pd\!-\!BaSO_4}$ (Rosenmund reduction) gives benzaldehyde ($\mathrm{C_6H_5CHO}$), not benzoic acid.

Reaction C is Correct: Benzene reacts with $\mathrm{CO}$ and $\mathrm{HCl}$ in the presence of anhydrous $\mathrm{AlCl_3 / CuCl}$ (Gattermann-Koch reaction) to give benzaldehyde ($\mathrm{C_6H_5CHO}$).

Reaction D is Incorrect: Benzamide on acidic hydrolysis ($\mathrm{H_3O^+}$, $\Delta$) gives benzoic acid, not aniline.

Hence, only one reaction is correct.