JEE Main 2022 · ChemistryNumerical answerNumerical valueEasyApplication

JEE Main 28 July 2022, Shift 2, Chemistry Q57

Question 57 of 90 in this shift, Chemistry question 27 of 30, Section B.

On reaction with stronger oxidizing agent like

\mathrm{KIO_4}

, hydrogen peroxide oxidizes with the evolution of

\mathrm{O_2}

. The oxidation number of I in

\mathrm{KIO_4}

changes to ______.

Official answer

NTA final key.

Chapter: Redox Reactions
Topic: Hydrogen and Hydrides
Idea tested: Redox Behavior of Hydrogen Peroxide

Same idea in other shifts

Asked 4× in all

29 Jun 2022, Shift 1 · Q68Which one of the following reactions indicates the reducing ability of hydrogen peroxide in basic medium ?MediumSingle correct
24 Feb 2021, Shift 1 · Q35(A) $\mathrm{HOCl + H_2O_2 \rightarrow H_3O^+ + Cl^- + O_2}$ (B) $\mathrm{I_2 + H_2O_2 + 2OH^- \rightarrow 2I^- + 2H_2O + O_2}$ Choose the…EasySingle correct
16 Mar 2021, Shift 2 · Q35The correct statements about $\mathrm{H_2O_2}$ are : (A) used in the treatment of effluents. (B) used as both oxidising and reducing…MediumOther

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.