Learn

Saturday, 31 October

JEE Main · Chemistry · Equilibrium

Equilibrium Constant for Modified Equations

JEE Main asked Equilibrium Constant for Modified Equations 9 times in 9 of the 108 shifts Lumi analysed, in 2020, 2022, 2024 and 2026. It belongs to Chemical Equilibrium, in Equilibrium (Chemistry). The longest wait between two years asking it was 2 years. In 2020, 2022, 2024 and 2026 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
9
in 9 shifts
Years
4 of 8
First asked
2020
last in 2026
Pattern
Frequent
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2022, 2024 and 2026. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.150.30’170.17’200’210.10’220’230.09’240’250.22’26

Raw count: 2017: 0 in 1 shift · 2020: 2 in 12 shifts · 2021: 0 in 24 shifts · 2022: 3 in 24 shifts · 2023: 0 in 12 shifts · 2024: 2 in 18 shifts · 2025: 0 in 8 shifts · 2026: 2 in 9 shifts.

Shift by shift

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

  • 20262 of 9
  • 20250 of 8
  • 20242 of 18
  • 20230 of 12
  • 20223 of 24
  • 20210 of 24
  • 20202 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Single correct is the usual form. Skill tested: calculation.

  • Equilibrium constant of combined reactions
  • K for scaled equation

Difficulty

Easy 6Medium 3Hard 0

1 of the 9 questions had a numerical answer.

Every question

All 9 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 · Q55Consider the following reactions in which all the reactants and products are present in gaseous state 2 xy⇌x2+y22\,xy \rightleftharpoons x_2 + y_2…MediumSingle correct
  2. 4 Apr 2026, Shift 1 · Q55At T(K), the equilibrium constant of A2(g)+B2(g)⇌C(g)\mathrm{A_2}(g)+\mathrm{B_2}(g)\rightleftharpoons \mathrm{C}(g) is 2.7×10−52.7\times10^{-5}. What is the…EasySingle correct
  3. 8 Apr 2024, Shift 1 · Q63For the given hypothetical reactions, the equilibrium constants are as follows : X⇌Y\mathrm{X\rightleftharpoons Y}; K1=1.0K_1=1.0…EasySingle correct
  4. 4 Apr 2024, Shift 2 · Q63The equilibrium constant for the reaction SO3(g)⇌SO2(g)+12O2(g)\mathrm{SO_3(g) \rightleftharpoons SO_2(g) + \frac{1}{2}O_2(g)} is…EasySingle correct
  5. 30 Jun 2022, Shift 1 · Q64The equilibrium constant for the reversible reaction 2A(g)⇌2B(g)+C(g)2\mathrm{A(g)} \rightleftharpoons 2\mathrm{B(g)}+\mathrm{C(g)} is K1\mathrm{K_1}…EasySingle correct
  6. 26 Jul 2022, Shift 1 · Q86At 298 K, the equilibrium constant is 2×10152 \times 10^{15} for the reaction :…MediumNumerical value
  7. 25 Jul 2022, Shift 2 · Q63Ka1\mathrm{K_{a_1}}, Ka2\mathrm{K_{a_2}} and Ka3\mathrm{K_{a_3}} are the respective ionization constants for the following reactions (a),…MediumSingle correct
  8. 6 Sep 2020, Shift 2 · Q44The value of Kc\mathrm{K_c} is 64 at 800 K for the reaction N2(g)+3H2(g)⇌2NH3(g)\mathrm{N_2(g)+3H_2(g)\rightleftharpoons 2NH_3(g)} The value of…EasySingle correct
  9. 4 Sep 2020, Shift 2 · Q28If the equilibrium constant for A⇌B+C\mathrm{A \rightleftharpoons B + C} is Keq(1)K_{eq}^{(1)} and that of B+C⇌P\mathrm{B + C \rightleftharpoons P}…EasySingle correct

Shifts: 4 Sep 2020, Shift 2, 6 Sep 2020, Shift 2, 30 Jun 2022, Shift 1, 25 Jul 2022, Shift 2, 26 Jul 2022, Shift 1, 4 Apr 2024, Shift 2, 8 Apr 2024, Shift 1, 4 Apr 2026, Shift 1, 8 Apr 2026, 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