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Lucas reagent is

1. Conc. HCl and anhydrous ZnCl2
2. Conc. HNO3 and hydrous ZnCl2
3. Conc. HCl and hydrous ZnCl2
4. Conc. HNO3 and anhydrous ZnCl2

Correct answer: Conc. HCl and anhydrous ZnCl2

Solution

Lucas reagent is a mixture of concentrated HCl and anhydrous ZnCl2, used to distinguish between primary, secondary, and tertiary alcohols based on their reactivity.

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