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Saturday, 31 October

JEE Main · Chemistry · Organic Chemistry: Some Basic Principles and Techniques

Huckel's Rule (4n+2)

JEE Main asked Huckel's Rule (4n+2) 8 times in 8 of the 108 shifts Lumi analysed, in 2021, 2022, 2023, 2024, 2025 and 2026. It belongs to Aromatic Hydrocarbons, in Organic Chemistry: Some Basic Principles and Techniques (Chemistry). The longest wait between two years asking it was 1 year. In 2024 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
8
in 8 shifts
Years
6 of 8
First asked
2021
last in 2026
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021, 2022, 2023, 2024, 2025 and 2026. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.10.20’170’200.03’210.03’220.07’230.14’240.13’250.11’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 1 in 12 shifts · 2024: 3 in 18 shifts · 2025: 1 in 8 shifts · 2026: 1 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20261 of 9
  • 20251 of 8
  • 20243 of 18
  • 20231 of 12
  • 20221 of 24
  • 20211 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Diagram based is the usual form. Skill tested: diagram reading.

  • Count aromatic species from structures
  • Classify compounds as aromatic or not

Difficulty

Easy 1Medium 6Hard 1

2 of the 8 questions had a numerical answer.

Every question

All 8 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  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. 30 Jan 2024, Shift 1 · Q71Which of the following molecule/species is most stable ?MediumDiagram basedHas a figure
  4. 27 Jan 2024, Shift 1 · Q89Among the given organic compounds, the total number of aromatic compounds is __________. (A) [figure] (B) [figure] (C) [figure] (D) [figure]MediumNumerical valueHas a figure
  5. 8 Apr 2024, Shift 2 · Q88Total number of aromatic compounds among the following compounds is ________.MediumNumerical valueHas a figure
  6. 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
  7. 28 Jun 2022, Shift 1 · Q72Which of the following structures are aromatic in nature ?MediumDiagram basedHas a figure
  8. 17 Mar 2021, Shift 1 · Q42Which of the following is an aromatic compound ?EasyDiagram basedHas a figure

Shifts: 17 Mar 2021, Shift 1, 28 Jun 2022, Shift 1, 13 Apr 2023, Shift 2, 27 Jan 2024, Shift 1, 30 Jan 2024, Shift 1, 8 Apr 2024, Shift 2, 2 Apr 2025, Shift 1, 8 Apr 2026, Shift 2.

Same topic

Other ideas in Aromatic Hydrocarbons

Aromatic Hydrocarbons has 21 ideas JEE Main has asked; 14 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas