JEE Main 2023 · ChemistryMultiple choiceSingle correctEasyConceptual

JEE Main 12 April 2023, Shift 1, Chemistry Q64

Question 64 of 90 in this shift, Chemistry question 4 of 30, Section A.

Four 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 charcoal, the correct order is:

(1) $\mathrm{D > C > B > A}$ Official answer
(2) $\mathrm{D > C > A > B}$
(3) $\mathrm{C > D > B > A}$
(4) $\mathrm{C > B > D > A}$

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

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
29 Jul 2022, Shift 2 · Q65Given below are the critical temperatures of some of the gases: | Gas | Critical temperature (K) | | He | 5.2 | | $\mathrm{CH_4}$ | 190.0…EasySingle correct

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.