Q. The products formed in the following reaction sequence are : C₆H₅NO₂ —(i) Br₂, AcOH; (ii) Sn, HCl; (iii) NaNO₂, HCl, 273 K; (iv) C₂H₅OH→ A + B
A) 3-Bromophenol, CH₃–CHO
B) 3-Bromo-1-ethoxybenzene (3-bromophenetole), CH₃–COOH
C) Bromobenzene, CH₃–CHO
D) 3-Bromophenol, 3-Bromo-1-ethoxybenzene
Explanation
[Solution by Dr. Abubacker] Nitrobenzene is brominated at the meta position (3-bromonitrobenzene), reduced to 3-bromoaniline and diazotised. Ethanol then reduces the diazonium salt (N₂⁺ replaced by H) and is itself oxidised to CH₃CHO. The products are bromobenzene and acetaldehyde. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.