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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceOtherMediumConceptual

JEE Main 24 June 2022, Shift 1, Chemistry Q69

Question 69 of 90 in this shift, Chemistry question 9 of 30, Section A.

Which of the following statements are correct ? (A) Both LiCl and MgCl2\mathrm{MgCl_2} are soluble in ethanol. (B) The oxides Li2O\mathrm{Li_2O} and MgO combine with excess of oxygen to give superoxide. (C) LiF is less soluble in water than other alkali metal fluorides. (D) Li2O\mathrm{Li_2O} is more soluble in water than other alkali metal oxides. Choose the most appropriate answer from the options given below :
  1. (1)(A) and (C) onlyOfficial answer
  2. (2)(A), (C) and (D) only
  3. (3)(B) and (C) only
  4. (4)(A) and (D) only

Official answer

Option 1

NTA final key (2022 Session 1).

Chapter
The s-Block Elements
Topic
s-Block Elements
Idea tested
Covalent Character in Halides

Same idea in other shifts

Asked 2× in all
  1. 26 Jul 2022, Shift 2 · Q62Arrange the following in increasing order of their covalent character. A. CaF2\mathrm{CaF_2} B. CaCl2\mathrm{CaCl_2} C. CaBr2\mathrm{CaBr_2} D.…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.