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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceAssertion–reasonMediumConceptual

JEE Main 27 July 2022, Shift 1, Chemistry Q64

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

Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Activated charcoal adsorbs SO2\mathrm{SO_2} more efficiently than CH4\mathrm{CH_4}. Reason R: Gases with lower critical temperatures are readily adsorbed by activated charcoal. In the light of the above statements, choose the correct answer from the options given below.
  1. (1)Both A and R are correct and R is the correct explanation of A.
  2. (2)Both A and R are correct but R is NOT the correct explanation of A.
  3. (3)A is correct but R is not correct.Official answer
  4. (4)A is not correct but R is correct.

Official answer

Option 3

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
  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

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.