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Friday, 9 October

JEE Main 2024 · ChemistryMultiple choiceSingle correctEasyCalculation

JEE Main 29 January 2024, Shift 1, Chemistry Q63

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

Chlorine undergoes disproportionation in alkaline medium as shown below : a Cl2(g)+b OH(aq)−→c ClO(aq)−+d Cl(aq)−+e H2O(l)\mathrm{a\ Cl_{2(g)}+b\ OH^-_{(aq)}\rightarrow c\ ClO^-_{(aq)}+d\ Cl^-_{(aq)}+e\ H_2O_{(l)}} The values of a, b, c and d in a balanced redox reaction are respectively :
  1. (1)2, 4, 1 and 3
  2. (2)2, 2, 1 and 3
  3. (3)1, 2, 1 and 1Official answer
  4. (4)3, 4, 4 and 2

Official answer

Option 3

NTA final key.

Chapter
Redox Reactions
Topic
Redox Reactions
Idea tested
Disproportionation Balancing

Same idea in other shifts

Asked 3× in all
  1. 6 Apr 2024, Shift 2 · Q64Match List - I with List - II. List - I (Reaction) (A) N2(g)+O2(g)→2NO(g)\mathrm{N_{2(g)}+O_{2(g)}\rightarrow 2NO_{(g)}} (B)…EasyMatch the list
  2. 31 Jan 2024, Shift 2 · Q65Given below are two statements : Statement I : S8\mathrm{S_8} solid undergoes disproportionation reaction under alkaline conditions to…MediumTwo statements

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.