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ChemistryNEET 2025Aromatic hydrocarbons: electrophilic substitution, directing effects

Hydrocarbons

Which one of the following reactions (shown in the figure) does not give benzene as the product?

Question 60 as printed in the NEET 2025 booklet

  1. A.Reaction (1)
  2. B.Reaction (2)
  3. C.Reaction (3)
  4. D.Reaction (4)✓

Solution

Sodium benzoate with soda lime decarboxylates to benzene; n-hexane over at 773 K aromatises to benzene; ethyne passed through a red-hot iron tube trimerises to benzene. Benzenediazonium chloride warmed with water gives phenol, not benzene — reaction (4).

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