NEET 2025, Chemistry Q15: Preparation of Alkyl Halides (Halo Alkanes) & Aryl Halides (Halo Arenes)

NEET2025Chemistry

Which one of the following reactions does NOT give benzene as the product?

Solution

(1) Sodium benzoate with soda lime undergoes decarboxylation to give benzene.

(2) n-Hexane undergoes aromatization (catalytic reforming) over Mo $_{2}$ O $_{3}$ to give benzene.

(3) Three molecules of acetylene undergo cyclic polymerisation on red-hot iron tube to give benzene.

(4) Benzene diazonium chloride on warming with water gives phenol (C $_{6}$ H $_{5}$ OH), not benzene. The diazo group is replaced by $-$ OH.

$∴$ Option (4) does not give benzene.

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