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COMEDK20269 May 2026Evening ShiftChemistryAlcohols Phenols and EthersActual

Choose the incorrect statement.

Options

  1. AReaction of alcohols with anhydrides is carried out in the presence of small amounts of Conc. H₂ SO₄ to remove
  2. BRelative ease of dehydration of alcohols on heating with a protic acid is Primary > Secondary > Tertiary
  3. Cp– Nitrophenol is more acidic than p– Cresol
  4. DCyclic C₄ H₇ OH exists as four structural isomers

Correct answer

B. Relative ease of dehydration of alcohols on heating with a protic acid is Primary > Secondary > Tertiary

Step-by-step solution

The relative ease of dehydration of alcohols on heating with a protic acid follows the order: Tertiary > Secondary > Primary. This is because the dehydration mechanism involves the formation of a carbocation intermediate, and the stability of carbocations follows the order 3^ > 2^ > 1^ . Therefore, the given statement regarding the ease of dehydration is incorrect. The reaction of alcohols with carboxylic acids and acid anhydrides is carried out in the presence of a small amount of concentrated H₂SO₄ . The reaction

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