Learn

Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceSingle correctEasyApplication

JEE Main 25 February 2021, Shift 1, Chemistry Q36

Question 36 of 90 in this shift, Chemistry question 6 of 30, Section A.

Which of the following equation depicts the oxidizing nature of H2O2\mathrm{H_2O_2} ?
  1. (1)KIO4+H2O2→KIO3+H2O+O2\mathrm{KIO_4 + H_2O_2 \rightarrow KIO_3 + H_2O + O_2}
  2. (2)I2+H2O2+2OH−→2I−+2H2O+O2\mathrm{I_2 + H_2O_2 + 2OH^- \rightarrow 2I^- + 2H_2O + O_2}
  3. (3)2I−+H2O2+2H+→I2+2H2O\mathrm{2I^- + H_2O_2 + 2H^+ \rightarrow I_2 + 2H_2O}Official answer
  4. (4)Cl2+H2O2→2HCl+O2\mathrm{Cl_2 + H_2O_2 \rightarrow 2HCl + O_2}

Official answer

Option 3

NTA final key.

Chapter
Hydrogen
Topic
Hydrogen and Hydrides
Idea tested
Oxidizing Action of H2O2

Same idea in other shifts

Asked 3× in all
  1. 27 Jul 2022, Shift 1 · Q68Given below are two statements. Statement I: Hydrogen peroxide can act as an oxidizing agent in both acidic and basic conditions.…MediumTwo statements
  2. 18 Mar 2021, Shift 2 · Q36In basic medium, H2O2\mathrm{H_2O_2} exhibits which of the following reactions ? (A) Mn2+→Mn4+\mathrm{Mn^{2+}} \rightarrow \mathrm{Mn^{4+}} (B)…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.