MHT CET 202624 AprilEvening Shift

Exam: MHT CET
Year: 2026
Date: 24 April
Shift: Evening Shift
Subject: Chemistry
Chapter: Alcohols Phenols and Ethers

MHT CET 2026 · 24 April · Evening Shift · Chemistry · Alcohols Phenols and Ethers

Which is the Lucas reagent among following?

Options

AAnhydrous $\text{ZnCl}_2$ dissolved in conc. $\text{HNO}_3$
B $\text{ZnCl}_{2(aq)}$ dissolved in conc. HCl
CAnhydrous $\text{ZnCl}_2$ dissolved in conc. HCl
DAnhydrous $\text{ZnCl}_2$ dissolved in dil. HCl

Correct answer

C. Anhydrous $\text{ZnCl}_2$ dissolved in conc. HCl

Step-by-step solution

Lucas reagent is a mixture of concentrated hydrochloric acid (conc. HCl) and anhydrous zinc chloride (anhydrous

\text{ZnCl}_2

).

It is used in organic chemistry to differentiate between primary, secondary, and tertiary alcohols based on their reactivity, which is observed by the time taken for the appearance of turbidity (cloudiness) in the solution.

Therefore, anhydrous

\text{ZnCl}_2

dissolved in conc. HCl is the correct composition of the Lucas reagent.

Answer: Anhydrous

\text{ZnCl}_2

dissolved in conc. HCl

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