JEE Main 2021 · ChemistryMultiple choiceSingle correctMediumRecall

JEE Main 27 August 2021, Shift 2, Chemistry Q37

Question 37 of 90 in this shift, Chemistry question 7 of 30, Section A.

Potassium permanganate on heating at 513 K gives a product which is :

(1)paramagnetic and colourless
(2)diamagnetic and colourless
(3)paramagnetic and greenOfficial answer
(4)diamagnetic and green

Official answer

Option 3

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

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3 Aug 2021, Shift 1 · Q39The correct statement for permanganate ion isMediumSingle 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.