JEE Main 2021ChemistryRedox ReactionsMediumNumerical

JEE Main 2021 — Redox Reactions Question with Solution

JEE Main 2021 (26 Feb Shift 2)

Question

In mildly alkaline medium, thiosulphate ion is oxidized by MnO4- to "A". The oxidation state of sulphur in "A" is_

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Show full solutionCorrect answer: 6
Correct answer
6

Step-by-step explanation

MnO4-+S2O32-→MnO2+SO42-

Oxidation state of 'S' in SO42-

=+6

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About this question

This is a previous-year question from JEE Main 2021, covering the Redox Reactions chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.