JEE Main 2021 · ChemistryMultiple choiceSingle correctMediumConceptual

JEE Main 3 August 2021, Shift 1, Chemistry Q39

Question 39 of 90 in this shift, Chemistry question 9 of 30, Section A.

The correct statement for permanganate ion is

(1)It has highly distorted tetrahedral structure.
(2)It has two Mn—O double bonds.
(3)It can be made by reduction of $\mathrm{MnO_4^{2-}}$ .
(4)It has three $\pi$ -bonds.Official answer

Official answer

Option 4

NTA final key.

Chapter: The d- and f-Block Elements
Topic: d-Block Elements
Idea tested: Permanganate Reactions

Same idea in other shifts

Asked 5× in all

4 Apr 2024, Shift 1 · Q86Consider the following reaction $\mathrm{MnO_2 + KOH + O_2 \rightarrow A + H_2O}$ . Product 'A' in neutral or acidic medium…MediumNumerical value
27 Jul 2022, Shift 1 · Q71Given below are two statements. Statement I: Iron (III) catalyst, acidified $\mathrm{K_2Cr_2O_7}$ and neutral $\mathrm{KMnO_4}$ have the…HardTwo statements
27 Aug 2021, Shift 2 · Q37Potassium permanganate on heating at 513 K gives a product which is :MediumSingle correct
17 Mar 2021, Shift 1 · Q39Given below are two statements : Statement I : Potassium permanganate on heating at 573 K forms potassium manganate. Statement II : Both…MediumTwo statements

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.