Target Exam

CUET

Subject

Chemistry

Chapter

Organic: Alcohols, Phenols and Ethers

Question:

What is Lucas Reagent?

Options:

$FeCl_3$ and conc. $HCl$

$CuCl_2$ and conc. $HCl$

$ZnCl_2$ and conc. $HCl$

$MgCl_2$ and conc. $HCl$

Correct Answer:

$ZnCl_2$ and conc. $HCl$

Explanation:

The correct answer is Option (3) → $ZnCl_2$ and conc. $HCl$

Lucas reagent is a solution of anhydrous zinc chloride ($ZnCl_2$) dissolved in concentrated hydrochloric acid ($HCl$). It is a fundamental tool in organic chemistry used to differentiate between primary, secondary, and tertiary alcohols.