JEE Main 2021 — D And F Block Elements Question with Solution
From: JEE Main 2021 (Online) 17th March Morning Shift
Question
Given below are two statements :
Statement I : Potassium permanganate on heating at 573K forms potassium manganate.
Statement II : Both potassium permanganate and potassium manganate are tetrahedral and paramagnetic in nature.
In the light of the above statements, choose the most appropriate answer from the options given below :
Statement I : Potassium permanganate on heating at 573K forms potassium manganate.
Statement II : Both potassium permanganate and potassium manganate are tetrahedral and paramagnetic in nature.
In the light of the above statements, choose the most appropriate answer from the options given below :
Choose an option
Show full solutionCorrect option: A
Correct answer
AStatement I is true but statement II is false
Step-by-step explanation
Statement-1 : KMnO4 K2MnO4 + MnO2 + O2
Statement-2 :
KMnO4 Mn7+ Diamagnetic.
KMnO4 Mn6+ Paramagnetic.
Statement-2 :
KMnO4 Mn7+ Diamagnetic.
KMnO4 Mn6+ Paramagnetic.
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This is a previous-year question from JEE Main 2021, covering the D And F Block Elements 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.