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Friday, 9 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 topic in other shifts

All s-Block Elements questions
  1. 6 Apr 2024, Shift 2 · Q66Match List - I with List - II. List - I (Alkali Metal) (A) Li (B) Na (C) Rb (D) Cs List - II (Emission Wavelength in nm) (I) 589.2 (II)…HardMatch the list
  2. 30 Jan 2024, Shift 2 · Q90Number of metal ions characterized by flame test among the following is ________.…MediumNumerical value
  3. 31 Jan 2024, Shift 2 · Q63Which of the following is least ionic?MediumSingle correct
  4. 6 Apr 2023, Shift 1 · Q67The standard electrode potential of M+/M\mathrm{M^+/M} in aqueous solution does not depend onMediumSingle correct
  5. 6 Apr 2023, Shift 1 · Q68The setting time of Cement is increased by addingEasySingle correct
  6. 8 Apr 2023, Shift 2 · Q67Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R Assertion A : Sodium is about 30…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 42 of the 174 JEE Main shifts held from 2017 to 2026.