JEE Main 2024 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 30 January 2024, Shift 1, Chemistry Q85

Question 85 of 90 in this shift, Chemistry question 25 of 30, Section B.

\mathrm{2MnO_4^- + bI^- + cH_2O \rightarrow x\,I_2 + y\,MnO_2 + z\,\overline{O}H}

If the above equation is balanced with integer coefficients, the value of

z

is ________.

Official answer

NTA final key.

Chapter: Redox Reactions
Topic: Redox Reactions
Idea tested: Balancing in Neutral/Faintly Alkaline Media

Same topic in other shifts

All Redox Reactions questions

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6 Apr 2026, Shift 2 · Q73500 mL of 0.2 M $\mathrm{MnO_4^-}$ solution in basic medium when mixed with 500 mL of 1.5 M KI solution, oxidises iodide ions to liberate…MediumNumerical value
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6 Apr 2024, Shift 2 · Q64Match List - I with List - II. List - I (Reaction) (A) $\mathrm{N_{2(g)}+O_{2(g)}\rightarrow 2NO_{(g)}}$ (B)…EasyMatch the list
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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.