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Saturday, 31 October

JEE Main · Chemistry · States of Matter

Gay-Lussac's Law

JEE Main asked Gay-Lussac's Law 3 times in 3 of the 108 shifts Lumi analysed, in 2021 and 2025. It belongs to Ideal Gas Laws, in States of Matter (Chemistry). The longest wait between two years asking it was 4 years. In 2021 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
3
in 3 shifts
Years
2 of 8
First asked
2021
last in 2025
Pattern
Occasional
across the analysed shifts

Questions on this idea a shift, by year

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

00.10.20’170’200.07’210’220’230’240.13’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 2 in 24 shifts · 2022: 0 in 24 shifts · 2023: 0 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
  • 20230 of 12
  • 20220 of 24
  • 20212 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.

  • Temperature from fractional pressure change
  • Bursting temperature from pressure limit

Difficulty

Easy 2Medium 1Hard 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. 3 Apr 2025, Shift 2 · Q34Pressure of an ideal gas, contained in a closed vessel, is increased by 0.4% when heated by 1∘1^\circC. Its initial temperature must be:MediumSingle correct
  2. 25 Jul 2021, Shift 2 · Q52An LPG cylinder contains gas at a pressure of 300 kPa at 27°C. The cylinder can withstand the pressure of 1.2×1061.2 \times 10^{6} Pa. The room…EasyNumerical value
  3. 25 Feb 2021, Shift 1 · Q52A car tyre is filled with nitrogen gas at 35 psi at 27∘27^\circC. It will burst if pressure exceeds 40 psi. The temperature in ∘^\circC at…EasyNumerical value

Shifts: 25 Feb 2021, Shift 1, 25 Jul 2021, Shift 2, 3 Apr 2025, Shift 2.

Same topic

Other ideas in Ideal Gas Laws

Ideal Gas Laws has 11 ideas JEE Main has asked; 6 of them came up in more than one question.

Topic analysisChapter analysisAll repeated ideas