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Saturday, 31 October

JEE Main 2023 · ChemistryMultiple choiceTwo statementsMediumConceptual

JEE Main 8 April 2023, Shift 1, Chemistry Q68

Question 68 of 90 in this shift, Chemistry question 8 of 30, Section A.

Given below are two statements: Statement I: Lithium and Magnesium do not form superoxide Statement II: The ionic radius of Li+\mathrm{Li^+} is larger than ionic radius of Mg2+\mathrm{Mg^{2+}} In the light of the above statements, choose the most appropriate answer from the options given below:
  1. (1)Both Statement I and Statement II are correctOfficial answer
  2. (2)Both Statement I and Statement II are incorrect
  3. (3)Statement I is correct but Statement II is incorrect
  4. (4)Statement I is incorrect but Statement II is correct

Official answer

Option 1

NTA final key.

Chapter
The s-Block Elements
Topic
s-Block Elements
Idea tested
Formation of Oxides, Peroxides, and Superoxides

Same idea in other shifts

Asked 5× in all
  1. 10 Apr 2023, Shift 1 · Q67The compound which does not exist isMediumSingle correct
  2. 30 Jun 2022, Shift 1 · Q69Correct statement about alkali metal oxides isEasySingle correct
  3. 4 Aug 2021, Shift 1 · Q38Choose the correct statement from the following :MediumSingle correct
  4. 4 Sep 2020, Shift 1 · Q34On combustion of Li, Na and K in excess of air, the major oxides formed, respectively, are :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.