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Friday, 9 October

JEE Main 2022 · ChemistryMultiple choiceMatch the listMediumRecall

JEE Main 28 July 2022, Shift 1, Chemistry Q69

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

Match List - I with List - II, match the gas evolved during each reaction. List - I | List - II (A) (NH4)2Cr2O7→Δ\mathrm{(NH_4)_2Cr_2O_7\xrightarrow{\Delta}} | (I) H2\mathrm{H_2} (B) KMnO4+HCl→\mathrm{KMnO_4+HCl\to} | (II) N2\mathrm{N_2} (C) Al+NaOH+H2O→\mathrm{Al+NaOH+H_2O\to} | (III) O2\mathrm{O_2} (D) NaNO3→Δ\mathrm{NaNO_3\xrightarrow{\Delta}} | (IV) Cl2\mathrm{Cl_2} Choose the correct answer from the options given below :
  1. (1)(A) - (II), (B) - (III), (C) - (I), (D) - (IV)
  2. (2)(A) - (III), (B) - (I), (C) - (IV), (D) - (II)
  3. (3)(A) - (II), (B) - (IV), (C) - (I), (D) - (III)Official answer
  4. (4)(A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Official answer

Option 3

NTA final key (2022 Session 2).

Chapter
The p-Block Elements
Topic
Group 15 & 16
Idea tested
Preparation of Dinitrogen

Same idea in other shifts

Asked 2× in all
  1. 2 Sep 2020, Shift 1 · Q35On heating compound (A) gives a gas (B) which is a constituent of air. This gas when treated with H2\mathrm{H_2} in the presence of a…MediumSingle 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 42 of the 174 JEE Main shifts held from 2017 to 2026.