Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
COMEDK2022ChemistryAlcohols Phenols and Ethers

The chemical formula of Lucas reagent is

Options

  1. AAnhy. ZnCl ₂ / HCl
  2. BC ₆ H ₅ SO ₂ Cl
  3. CNaOH + CaO
  4. DHNO ₂

Correct answer

A. Anhy. ZnCl ₂ / HCl

Step-by-step solution

Lucas reagent is a solution of anhydrous zinc chloride ( ZnCl ₂ ) in concentrated hydrochloric acid ( HCl ). It is used to classify alcohols based on their reactivity towards the substitution reaction, where primary, secondary, and tertiary alcohols react at different rates to form alkyl chlorides. Answer: Anhy. ZnCl ₂ / HCl

Practice Alcohols Phenols and Ethers on Quantrex Academy →

More from Alcohols Phenols and Ethers

Consider the series of reactions given and identify the final product [Z]. 2026An unsaturated organic compound (C₃ H₆ ), undergoes the following series of reactions: C ₃ H ₆ dil H₂SO₄ [ B ] ( Major Product ) + HCl / ZnCl₂ [ C ] Na_ (s) / dry ether [ D ] Ident 2026Two statements [A] and [B] are given below. Choose the correct option. A) Protonated R - CH₂- OH can serve as Electrophiles while neutral R - OH acts as a Nucleophile. B) The bond 2026Choose the incorrect statement. 2026A compound [X] undergoes reactions as given. Identify compounds [C] and [D] formed in these reactions. 2026Choose the correct reason: o-hydroxybenzaldehyde is a liquid at room temperature while p -hydroxy-benzaldehyde is a high melting solid, because 2026Match reactions in Column I with the corresponding products formed as given in Column II. Column I Column II A. C ₆ H ₅ N ₂^+ Cl ^- + H ₂ O warm P. p–Bromophenol B. C ₆ H ₅ OH + Br 2026An aliphatic compound [X], Molecular formula ( C ₄ H ₁₀ O ) can be prepared from Acetone and R– Mg–X. [X] with 20% Phosphoric acid gives an unsaturated compound C ₄ H ₈ [Y]. Compou 2026 Full Alcohols Phenols and Ethers list All COMEDK PYQs