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Saturday, 31 October

JEE Main 2024 · ChemistryMultiple choiceDiagram basedEasyConceptual

JEE Main 6 April 2024, Shift 2, Chemistry Q74

Question 74 of 90 in this shift, Chemistry question 14 of 30, Section A.

Four aromatic compounds are shown: (I) toluene (benzene ring with CH3\mathrm{CH_3}), (II) benzene, (III) anisole (benzene ring with OCH3\mathrm{OCH_3}), (IV) benzotrifluoride (benzene ring with CF3\mathrm{CF_3}). The correct arrangement for decreasing order of electrophilic substitution for above compounds is :

The figure, in words

Four benzene rings labelled (I) with CH3, (II) plain benzene, (III) with OCH3, (IV) with CF3.
  1. (1)(III) > (I) > (II) > (IV)Official answer
  2. (2)(IV) > (I) > (II) > (III)
  3. (3)(III) > (IV) > (II) > (I)
  4. (4)(II) > (IV) > (III) > (I)

Official answer

Option 1

NTA final key.

Chapter
Hydrocarbons
Topic
Aromatic Hydrocarbons
Idea tested
Ranking Activating Groups

Same idea in other shifts

Asked 6× in all
  1. 1 Feb 2024, Shift 1 · Q78Which of the following compound will most easily be attacked by an electrophile ?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.