Moderate

The test used to distinguish among primary, secondary, and tertiary alcohols is:

Correct answer: C. Lucas Test

  • A. 2,4 - DNPH test
  • B. Tollens test
  • C. Lucas Test
  • D. Fehling solution test

Explanation

The Lucas test is used to differentiate primary, secondary, and tertiary alcohols. It is based on the rate of turbidity formation due to alkyl chloride formation. Tertiary alcohols react fastest, secondary slower, and primary show little or no reaction.

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About Alcohols and Phenols

Alcohols are classified as primary, secondary or tertiary and studied through their hydrogen bonding, acidity, oxidation and reactions with active metals, acids and halogenating agents. Phenols require separate treatment because the hydroxyl group is attached to an aromatic ring, making their acidity and electrophilic substitution different from ordinary alcohols.

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