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COMEDK2023Evening ShiftChemistryAlcohols Phenols and EthersActual

Choose the incorrect statement.

Options

  1. Am - Cresol is a weaker acid than Phenol.
  2. BAcetylation of Salicylic acid produces 2-Acetoxybenzoic acid.
  3. CPhenol on heating with Conc. H ₂ SO ₄ yields sulphanilic acid.
  4. DAcidic nature of Phenol is due to -I effect of oxygen of the hydroxyl group.

Correct answer

C. Phenol on heating with Conc. H ₂ SO ₄ yields sulphanilic acid.

Step-by-step solution

(1) Correct: m-Cresol has a -CH₃ group ( +I effect) which destabilizes the phenoxide ion weaker acid than phenol. (2) Correct: Acetylation of salicylic acid (2-hydroxybenzoic acid) with acetic anhydride gives 2-acetoxybenzoic acid (aspirin). (3) Incorrect: Phenol on heating with conc. H₂SO₄ undergoes sulfonation to give phenol-2-sulfonic acid or phenol-4-sulfonic acid (depending on temperature), not sulphanilic acid. Sulphanilic acid is obtained by heating aniline with conc. H₂SO₄ . (4) Correct: The acidic nature o

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