JEE Main 2022ChemistryHydrogenMediumNumerical

JEE Main 2022Hydrogen Question with Solution

JEE Main 2022 (28 Jul Shift 2)

Question

On reaction with stronger oxidizing agent like KIO4, hydrogen peroxide oxidizes with the evolution of O2. The oxidation number of I in KIO4 changes to

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Show full solutionCorrect answer: 5
Correct answer
5

Step-by-step explanation

Hydrogen peroxide acts as an oxidising as well as reducing agent in both acidic and alkaline media.

But its reducing action is more effective in alkaline medium

KIO4+H2O2KIO3+O2+H2O

The oxidation number of iodine in IO3- is +5

The geometry of iodine containing compound changes from tetrahedral to pyramidal in the above reaction

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About this question

This is a previous-year question from JEE Main 2022, covering the Hydrogen 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.