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Saturday, 31 October

JEE Main · Chemistry · Equilibrium

Dalton's Law in Kp Calculations

JEE Main asked Dalton's Law in Kp Calculations 3 times in 3 of the 108 shifts Lumi analysed, in 2023, 2025 and 2026. It belongs to Chemical Equilibrium, in Equilibrium (Chemistry). The longest wait between two years asking it was 2 years.

Updated 2026-10-24

Times asked
3
in 3 shifts
Years
3 of 8
First asked
2023
last in 2026
Pattern
Frequent
across the analysed shifts

Questions on this idea a shift, by year

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

00.10.20’170’200’210’220.07’230’240.13’250.11’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 0 in 24 shifts · 2022: 0 in 24 shifts · 2023: 1 in 12 shifts · 2024: 0 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
  • 20240 of 18
  • 20231 of 12
  • 20220 of 24
  • 20210 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: multi-step.

  • Partial pressure from kc and inert gas
  • Kp from moles and pressure

Difficulty

Easy 0Medium 3Hard 0

2 of the 3 questions had a numerical answer.

Every question

All 3 questions

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

  1. 6 Apr 2026, Shift 1 · Q57One mole each of He and A(g) are taken in a 10 L closed flask and heated to 400 K to establish the following equilibrium.…MediumSingle correct
  2. 2 Apr 2025, Shift 1 · Q73Consider the following equilibrium, CO(g)+2H2(g)⇌CH3OH(g)\mathrm{CO(g)+2H_2(g)\rightleftharpoons CH_3OH(g)} 0.1 mol of CO along with a catalyst is present in…MediumNumerical value
  3. 10 Apr 2023, Shift 2 · Q85A(g)⇌2B(g)+C(g)\mathrm{A}(g) \rightleftharpoons 2\mathrm{B}(g) + \mathrm{C}(g) For the given reaction, if the initial pressure is 450 mm Hg and the…MediumNumerical value

Shifts: 10 Apr 2023, Shift 2, 2 Apr 2025, Shift 1, 6 Apr 2026, Shift 1.

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