Chemistry NEET Full Syllabus Mock Test 180 Question New Syllabus Mock Test - 8 PCB Single Correct MCQ
Published on: August 14, 2026

Benzene is first treated with oleum to give compound X. Heating X with molten NaOH followed by acidification furnishes compound Y. On treatment of Y with zinc dust, compound Z is obtained. Identify Z from the options below.

A
Catechol
B
Benzene
C
Phenol
D
Resorcinol

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Text Solution

Verified by Experts
The correct answer is:
B

Oleum sulfonates benzene → benzene sulphonic acid (X).
Fusion with molten NaOH, then acidify → phenol (Y) (desulfonation ).
Phenol +Zn dust → deoxygenation to benzene (Z).

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