Given below are the critical temperatures of some of the gases: | Gas | Critical temperature (K) | | He | 5.2 | | $\mathrm{CH_4}$ | 190.0 | | $\mathrm{CO_2}$ | 304.2 | | $\mathrm{NH_3}$ | 405.5 | The gas showing least adsorption on a definite amount of charcoal is

JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyData or graph

JEE Main 29 July 2022, Shift 2, Chemistry Q65

Question 65 of 90 in this shift, Chemistry question 5 of 30, Section A.

Given below are the critical temperatures of some of the gases:

Gas	Critical temperature (K)
He	5.2
$\mathrm{CH_4}$	190.0
$\mathrm{CO_2}$	304.2
$\mathrm{NH_3}$	405.5

The gas showing least adsorption on a definite amount of charcoal is

(1)HeOfficial answer
(2) $\mathrm{CH_4}$
(3) $\mathrm{CO_2}$
(4) $\mathrm{NH_3}$

Official answer

Option 1

NTA final key.

Chapter: Surface Chemistry
Topic: Adsorption
Idea tested: Critical Temperature and Extent of Adsorption

Same idea in other shifts

Asked 3× in all

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
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

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.