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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceDiagram basedMediumDiagram reading

JEE Main 26 July 2022, Shift 1, Chemistry Q73

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

Which of the following compounds is not aromatic ?

The figure, in words

All four options are drawn structures (no text labels except the charges and the two H atoms inside the ring in option C).
  1. (1)[figure: five-membered ring with two C=C double bonds and a negative charge (circled minus) on the ring atom at the bottom vertex]
  2. (2)[figure: three-membered ring with one C=C double bond along the top edge and a positive charge (circled plus) on the bottom ring atom]
  3. (3)[figure: single large ring drawn as a two-lobed outline (ten ring atoms) with alternating double bonds around it and two H atoms drawn pointing into the ring]Official answer
  4. (4)[figure: two fused six-membered rings (ten ring carbons) drawn with alternating double bonds]

Official answer

Option 3

NTA final key.

Chapter
Organic Chemistry: Some Basic Principles and Techniques
Topic
Aromatic Hydrocarbons
Idea tested
Annulene Planarity and Aromaticity

Same idea in other shifts

Asked 3× in all
  1. 8 Apr 2024, Shift 1 · Q76Which of the following are aromatic? A. [figure: fused bicyclic ring system, two six-membered rings] B. [figure: benzene ring with a vinyl…MediumOtherHas a figure
  2. 27 Jul 2022, Shift 1 · Q74Given below are two statements: one is labelled as Assertion A and, the other is labelled as Reason R. Assertion A: [6] Annulene, [8]…MediumAssertion–reasonHas 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. 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.