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Friday, 9 October

JEE Main 2025 · ChemistryMultiple choiceSingle correctMediumApplication

JEE Main 2 April 2025, Shift 1, Chemistry Q65

Question 65 of 75 in this shift, Chemistry question 15 of 25, Section A.

Designate whether each of the following compounds is aromatic or not aromatic.

The figure, in words

Eight ring structures labelled (a)-(h): (a) cyclopentadienyl ring with a negative charge on the sp3 carbon; (b) cyclopentadienyl ring with a positive charge; (c) cyclobutadiene ring with a positive charge on each of two adjacent carbons; (d) cyclobutadiene ring with a negative charge on each of two adjacent carbons; (e) seven-membered ring (cycloheptatrienyl) with a positive charge; (f) cyclooctatetraene (eight-membered ring with alternating double bonds); (g) cyclobutadiene (four-membered ring with two double bonds); (h) cyclopropenyl ring with a positive charge.
  1. (1)b, e, f, g aromatic and a, c, d, h not aromatic
  2. (2)a, c, d, e, h aromatic and b, f, g not aromaticOfficial answer
  3. (3)a, b, c, d aromatic and e, f, g, h not aromatic
  4. (4)e, g aromatic and a, b, c, d, f, h not aromatic

Official answer

Option 2

NTA final key.

Chapter
Hydrocarbons
Topic
Aromatic Hydrocarbons
Idea tested
Huckel's Rule (4n+2)

Same idea in other shifts

Asked 3× 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. 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

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 42 of the 174 JEE Main shifts held from 2017 to 2026.