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Friday, 16 October

JEE Main 2022 · ChemistryMultiple choiceMatch the listMediumRecall

JEE Main 28 July 2022, Shift 1, Chemistry Q63

Question 63 of 90 in this shift, Chemistry question 3 of 30, Section A.

Match List - I with List - II. List - I | List - II (A) Cd(s)+2Ni(OH)3(s)→CdO(s)+2Ni(OH)2(s)+H2O(l)\mathrm{Cd(s)+2Ni(OH)_3(s)\to CdO(s)+2Ni(OH)_2(s)+H_2O(\mathit{l})} | (I) Primary battery (B) Zn(Hg)+HgO(s)→ZnO(s)+Hg(l)\mathrm{Zn(Hg)+HgO(s)\to ZnO(s)+Hg(\mathit{l})} | (II) Discharging of secondary battery (C) 2PbSO4(s)+2H2O(l)→Pb(s)+PbO2(s)+2H2SO4(aq)\mathrm{2PbSO_4(s)+2H_2O(\mathit{l})\to Pb(s)+PbO_2(s)+2H_2SO_4(aq)} | (III) Fuel cell (D) 2H2(g)+O2(g)→2H2O(l)\mathrm{2H_2(g)+O_2(g)\to 2H_2O(\mathit{l})} | (IV) Charging of secondary battery Choose the correct answer from the options given below :
  1. (1)(A) - (I), (B) - (II), (C) - (III), (D) - (IV)
  2. (2)(A) - (IV), (B) - (I), (C) - (II), (D) - (III)
  3. (3)(A) - (II), (B) - (I), (C) - (IV), (D) - (III)Official answer
  4. (4)(A) - (II), (B) - (I), (C) - (III), (D) - (IV)

Official answer

Option 3

NTA final key (2022 Session 2).

Chapter
Electrochemistry
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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.