JEE Main 2018ChemistryAlcohols Phenols And EthersProperties Preparation And Uses Of PhenolsmediumMCQ

JEE Main 2018 — Alcohols Phenols And Ethers Question with Solution

From: JEE Main 2018 (Offline)

Question

Phenol reacts with methyl chloroformate in the presence of NaOH to form product A. A reacts with Br2 to form product B. A and B are respectively :

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Show full solutionCorrect option: D
Correct answer
DJEE Main 2018 (Offline) Chemistry - Alcohols, Phenols and Ethers Question 154 English Option 4

Step-by-step explanation

JEE Main 2018 (Offline) Chemistry - Alcohols, Phenols and Ethers Question 154 English Explanation 1

First in presence of OH ion phenol will donate H+ ion and create phenoxide ion. Then this ion will react with methyl chloroformate and carbon joined with Cl and O will be slightly positive charge due to pulling of electron towards O and Cl atom. This positive charge C atom will join with negative charged O ion in phenoxide ion and create product A.

JEE Main 2018 (Offline) Chemistry - Alcohols, Phenols and Ethers Question 154 English Explanation 2

Product A reacts with Br2 and perform electrofilic aromatic substitution and at para position Br will be added.

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About this question

This is a previous-year question from JEE Main 2018, covering the Alcohols Phenols And Ethers chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.