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Saturday, 31 October

JEE Main 2024 · ChemistryNumerical answerNumerical valueMediumMulti-step

JEE Main 27 January 2024, Shift 1, Chemistry Q89

Question 89 of 90 in this shift, Chemistry question 29 of 30, Section B.

Among the given organic compounds, the total number of aromatic compounds is __________. (A) [figure] (B) [figure] (C) [figure] (D) [figure]

The figure, in words

(A) naphthalene (two fused benzene rings); (B) benzene ring joined through a CH2 to a cyclohexene ring (one C=C); (C) indene-type bicyclic: benzene ring fused to a five-membered ring containing one C=C and a carbon bearing two dots (lone pair, carbene/carbanion-type) on the right; (D) fluorenyl anion: two benzene rings fused to a five-membered ring whose bottom carbon carries a negative charge sign.

Official answer

3

NTA final key.

Chapter
Organic Chemistry: Some Basic Principles and Techniques
Topic
Aromatic Hydrocarbons
Idea tested
Huckel's Rule (4n+2)

Same idea in other shifts

Asked 8× in all
  1. 8 Apr 2026, Shift 2 · Q64The total number of aromatic compounds/species from the following is [figures: p-benzoquinone; tropylium cation (cycloheptatrienyl…MediumOtherHas a figure
  2. 2 Apr 2025, Shift 1 · Q65Designate whether each of the following compounds is aromatic or not aromatic.MediumSingle correctHas a figure
  3. 8 Apr 2024, Shift 2 · Q88Total number of aromatic compounds among the following compounds is ________.MediumNumerical valueHas a figure
  4. 30 Jan 2024, Shift 1 · Q71Which of the following molecule/species is most stable ?MediumDiagram basedHas a figure
  5. 13 Apr 2023, Shift 2 · Q74Given below are two statements : Statement I : Tropolone is an aromatic compound and has 8 π\pi electrons. Statement II : π\pi electrons…HardTwo statements
  6. 28 Jun 2022, Shift 1 · Q72Which of the following structures are aromatic in nature ?MediumDiagram basedHas a figure
  7. 17 Mar 2021, Shift 1 · Q42Which of the following is an aromatic compound ?EasyDiagram basedHas 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.