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Saturday, 31 October

JEE Main · Chemistry · Equilibrium

Degree of Dissociation

JEE Main asked Degree of Dissociation 5 times in 5 of the 108 shifts Lumi analysed, in 2021, 2022, 2023 and 2025. It belongs to Chemical Equilibrium, in Equilibrium (Chemistry). The longest wait between two years asking it was 2 years. In 2023 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
5
in 5 shifts
Years
4 of 8
First asked
2021
last in 2025
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

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

00.10.20’170’200.03’210.03’220.14’230’240.13’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 2 in 12 shifts · 2024: 0 in 18 shifts · 2025: 1 in 8 shifts · 2026: 0 in 9 shifts.

Shift by shift

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

  • 20260 of 9
  • 20251 of 8
  • 20240 of 18
  • 20232 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

Numerical value is the usual form. Skill tested: calculation.

  • Degree of dissociation from kp
  • Kc from fraction reacted

Difficulty

Easy 0Medium 5Hard 0

3 of the 5 questions had a numerical answer.

Every question

All 5 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 2025, Shift 2 · Q74The equilibrium constant for decomposition of H2O\mathrm{H_2O} (g) H2O(g)⇌H2(g)+12O2(g)\mathrm{H_2O(g) \rightleftharpoons H_2(g) + \frac{1}{2}O_2(g)}…MediumNumerical value
  2. 11 Apr 2023, Shift 1 · Q85A mixture of 1 mole of H2O\mathrm{H_2O} and 1 mole of CO is taken in a 10 litre container and heated to 725 K. At equilibrium 40% of water…MediumNumerical value
  3. 6 Apr 2023, Shift 1 · Q62For a concentrated solution of a weak electrolyte (KeqK_{eq} = equilibrium constant) A2B3\mathrm{A_2B_3} of concentration 'c', the degree of…MediumSingle correct
  4. 24 Jun 2022, Shift 1 · Q64For a reaction at equilibrium A(g)⇌B(g)+12C(g)\mathrm{A(g)} \rightleftharpoons \mathrm{B(g)}+\frac{1}{2}\mathrm{C(g)} the relation between dissociation…MediumSingle correct
  5. 26 Feb 2021, Shift 1 · Q55A homogeneous ideal gaseous reaction AB2(g)⇌A(g)+2B(g)\mathrm{AB_{2(g)} \rightleftharpoons A_{(g)} + 2B_{(g)}} is carried out in a 25 litre flask at…MediumNumerical value

Shifts: 26 Feb 2021, Shift 1, 24 Jun 2022, Shift 1, 6 Apr 2023, Shift 1, 11 Apr 2023, Shift 1, 8 Apr 2025, Shift 2.

Same topic

Other ideas in Chemical Equilibrium

Chemical Equilibrium has 17 ideas JEE Main has asked; 11 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas