Q. Consider the following reaction: Phenol —(Zn dust)→ X —(CH₃Cl, anhydrous AlCl₃)→ Y —(alkaline KMnO₄)→ Z The product Z is:
A) Benzaldehyde
B) Benzoic acid
C) Benzene
D) Toluene
Explanation
[Solution from source] Distilling phenol with zinc dust removes the –OH, giving benzene (X). Friedel–Crafts methylation gives toluene (Y). Alkaline KMnO₄ oxidises the whole side chain to –COOH, giving benzoic acid (Z), not just benzaldehyde. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.