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Saturday, 31 October

JEE Main 2023 · ChemistryMultiple choiceOtherMediumConceptual

JEE Main 15 April 2023, Shift 1, Chemistry Q73

Question 73 of 90 in this shift, Chemistry question 13 of 30, Section A.

Decreasing order of reactivity towards electrophilic substitution for the following compounds is : (a) toluene (benzene bearing CH3\mathrm{CH_3}) (b) benzene (c) benzene bearing CF3\mathrm{CF_3} (d) benzene bearing OCH3\mathrm{OCH_3} (e) benzene bearing NMe2\mathrm{NMe_2}

The figure, in words

Five benzene rings drawn with substituents: (a) CH3, (b) none (plain benzene), (c) CF3, (d) OCH3, (e) NMe2.
  1. (1)a > d > e > b > c
  2. (2)e > d > a > b > cOfficial answer
  3. (3)d > a > e > c > b
  4. (4)c > b > a > d > e

Official answer

Option 2

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. 1 Feb 2024, Shift 1 · Q78Which of the following compound will most easily be attacked by an electrophile ?EasyDiagram basedHas a figure
  3. 31 Jan 2024, Shift 2 · Q73The correct order of reactivity in electrophilic substitution reaction of the following compounds is :EasyDiagram basedHas a figure
  4. 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
  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.