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Saturday, 31 October

JEE Main 2024 · ChemistryMultiple choiceDiagram basedEasyConceptual

JEE Main 1 February 2024, Shift 1, Chemistry Q78

Question 78 of 90 in this shift, Chemistry question 18 of 30, Section A.

Which of the following compound will most easily be attacked by an electrophile ?

The figure, in words

Four aromatic compounds drawn as structures: benzene, chlorobenzene, phenol, toluene.
  1. (1)[figure: benzene]
  2. (2)[figure: chlorobenzene, benzene ring with Cl]
  3. (3)[figure: phenol, benzene ring with OH]Official answer
  4. (4)[figure: toluene, benzene ring with CH3\mathrm{CH_3}]

Official answer

Option 3

NTA final key.

Chapter
Haloalkanes and Haloarenes
Topic
Aromatic Hydrocarbons
Idea tested
Ranking Activating Groups

Same idea in other shifts

Asked 6× in all
  1. 6 Apr 2024, Shift 2 · Q74Four aromatic compounds are shown: (I) toluene (benzene ring with CH3\mathrm{CH_3}), (II) benzene, (III) anisole (benzene ring with…EasyDiagram basedHas a figure
  2. 31 Jan 2024, Shift 2 · Q73The correct order of reactivity in electrophilic substitution reaction of the following compounds is :EasyDiagram basedHas a figure
  3. 11 Apr 2023, Shift 1 · Q73Arrange the following compounds in increasing order of rate of aromatic electrophilic substitution reaction (a) 1-tetralol: tetralin with…HardDiagram basedHas a figure
  4. 15 Apr 2023, Shift 1 · Q73Decreasing order of reactivity towards electrophilic substitution for the following compounds is : (a) toluene (benzene bearing…MediumOtherHas a figure
  5. 28 Jul 2022, Shift 2 · Q43Arrange the following in increasing order of reactivity towards nitration A. p-xylene B. bromobenzene C. mesitylene D. nitrobenzene E.…MediumSingle correct

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. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.