MHT CET Medical202625 April 2026Morning ShiftChemistryAlcohols Phenols and EthersActual
Identify Lucas reagent from following.
Options
- Aconc. HCl + anhydrous AlCl ₃
- Bconc. HCl + anhydrous ZnCl ₂
- Cconc. HCl + dil. H ₂ SO ₄
- Dconc. HCl + conc. H ₂ SO ₄
Correct answer
B. conc. HCl + anhydrous ZnCl ₂
Step-by-step solution
Lucas reagent is a mixture of concentrated hydrochloric acid ( HCl ) and anhydrous zinc chloride ( 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. HCl + anhydrous ZnCl ₂