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MHT CET202123 Sep 2021Evening ShiftChemistryGeneral Organic ChemistryActual

Which of the following is NOT dihydric alcohol?

Options

  1. ACatechol
  2. BHydroquinone
  3. CPhloroglucinol
  4. DResorcinol

Correct answer

C. Phloroglucinol

Step-by-step solution

A dihydric alcohol contains two hydroxyl (-OH) groups on a benzene ring in the context of phenols. Catechol is benzene-1,2-diol, resorcinol is benzene-1,3-diol, and hydroquinone is benzene-1,4-diol—each has two hydroxyl groups. Phloroglucinol is benzene-1,3,5-triol with three hydroxyl groups, making it trihydric rather than dihydric. Answer: C

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