JEE Main 2018ChemistryHydrogenMediumMCQ

JEE Main 2018Hydrogen Question with Solution

JEE Main 2018 (08 Apr)

Question

Hydrogen peroxide oxidises FeCN64-to FeCN63- in acidic medium, but reduces FeCN63-toFeCN64- in alkaline medium. The other products formed are, respectively

Choose an option

Show full solutionCorrect option: D
Correct answer
DH2O and H2O+O2

Step-by-step explanation

Hydrogen undergoes the following changes:

1) While acting as an oxidising agent in an acidic medium,

H2O2+2H++2e-2H2O

2) While acting as a reducing agent in an alkaline medium,

H2O2+2OH-O2+2H2O+2e-

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About this question

This is a previous-year question from JEE Main 2018, 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.