Question:

Lucas test is associated with

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Lucas test: 3° alcohol (immediate), 2° (5 mins), 1° (no reaction at RT).
Updated On: Apr 10, 2026
  • aldehydes
  • phenols
  • carboxylic acids
  • alcohols
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The Correct Option is D

Solution and Explanation

Step 1: Reagent
Lucas reagent is a mixture of anhydrous $ZnCl_{2}$ and concentrated $HCl$.
Step 2: Reaction

It reacts with alcohols to form alkyl chlorides, which appear as turbidity.
Step 3: Application

The test is used specifically to distinguish between primary, secondary, and tertiary alcohols based on the speed of turbidity formation.
Final Answer: (d)
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