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Saturday, 31 October

JEE Main 2024 · ChemistryMultiple choiceTwo statementsEasyConceptual

JEE Main 5 April 2024, Shift 1, Chemistry Q77

Question 77 of 90 in this shift, Chemistry question 17 of 30, Section A.

Given below are two statement : Statements I : Bromination of phenol in solvent with low polarity such as CHCl3\mathrm{CHCl_3} or CS2\mathrm{CS_2} requires Lewis acid catalyst. Statements II : The Lewis acid catalyst polarises the bromine to generate Br+\mathrm{Br^+}. In the light of the above statements, choose the correct answer from the options given below :
  1. (1)Both Statement I and Statement II are true
  2. (2)Both Statement I and Statement II are false
  3. (3)Statement I is true but Statement II is false
  4. (4)Statement I is false but Statement II is trueOfficial answer

Official answer

Option 4

NTA final key.

Chapter
Alcohols, Phenols and Ethers
Topic
Alcohols and Phenols
Idea tested
Phenol Bromination Solvent Effect

Same idea in other shifts

Asked 3× in all
  1. 26 Jul 2022, Shift 1 · Q72The difference in the reaction of phenol with bromine in chloroform and bromine in water medium is due to :EasySingle correct
  2. 25 Jul 2021, Shift 1 · Q45[figure: phenol converted to 4-bromophenol (Major Product)] The given reaction can occur in the presence of : (a) Bromine water (b)…MediumSingle correctHas a figure

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.