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Saturday, 31 October

JEE Main · Chemistry · Surface Chemistry

Critical Temperature and Extent of Adsorption

JEE Main asked Critical Temperature and Extent of Adsorption 3 times in 3 of the 108 shifts Lumi analysed, in 2022 and 2023. It belongs to Adsorption, in Surface Chemistry (Chemistry). The longest wait between two years asking it was 1 year. In 2022 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
2022
last in 2023
Pattern
Occasional
across the analysed shifts

Questions on this idea a shift, by year

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

00.050.10’170’200’210.07’220.07’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 0 in 24 shifts · 2022: 2 in 24 shifts · 2023: 1 in 12 shifts · 2024: 0 in 18 shifts · 2025: 0 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
  • 20250 of 8
  • 20240 of 18
  • 20231 of 12
  • 20222 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

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

  • Adsorption order from critical temperatures
  • Identify gas with least adsorption from critical temperatures

Difficulty

Easy 2Medium 1Hard 0

Every question was multiple choice.

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. 12 Apr 2023, Shift 1 · Q64Four gases A, B, C and D have critical temperatures 5.3, 33.2, 126.0 and 154.3K respectively. For their adsorption on a fixed amount of…EasySingle correct
  2. 29 Jul 2022, Shift 2 · Q65Given below are the critical temperatures of some of the gases: | Gas | Critical temperature (K) | | He | 5.2 | | CH4\mathrm{CH_4} | 190.0…EasySingle correct
  3. 27 Jul 2022, Shift 1 · Q64Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Activated charcoal…MediumAssertion–reason

Shifts: 27 Jul 2022, Shift 1, 29 Jul 2022, Shift 2, 12 Apr 2023, Shift 1.

Same topic

Other ideas in Adsorption

Adsorption has 13 ideas JEE Main has asked; 10 of them came up in more than one question.

Topic analysisChapter analysisAll repeated ideas