Q135 / 200 · MHT CET - Medical 2026 (25 April Shift 1) · Chemistry
Identify Lucas reagent from following.
- Aconc. $\text{HCl}$ + anhydrous $\text{AlCl}_3$
- Correct answerBconc. $\text{HCl}$ + anhydrous $\text{ZnCl}_2$
- Cconc. $\text{HCl}$ + dil. $\text{H}_2\text{SO}_4$
- Dconc. $\text{HCl}$ + conc. $\text{H}_2\text{SO}_4$
Solution
Lucas reagent is a mixture of concentrated hydrochloric acid ($\text{HCl}$) and anhydrous zinc chloride ($\text{ZnCl}_2$).
It is used in organic chemistry to differentiate between primary, secondary, and tertiary alcohols based on their reactivity and the time taken to form turbidity.
Answer: conc. $\text{HCl}$ + anhydrous $\text{ZnCl}_2$
It is used in organic chemistry to differentiate between primary, secondary, and tertiary alcohols based on their reactivity and the time taken to form turbidity.
Answer: conc. $\text{HCl}$ + anhydrous $\text{ZnCl}_2$
Hence, the correct answer is option: 'B'.