JEE Main 2020 — Redox Reactions Question with Solution
From: JEE Main 2020 (Online) 7th January Morning Slot
Question
Oxidation number of potassium in K2O. K2O2 and KO2 respectively is :
Choose an option
Show full solutionCorrect option: B
Correct answer
B+1, +1 and + 1
Step-by-step explanation
Potasisum has an oxidation of +1 (only) in
combined state.
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This is a previous-year question from JEE Main 2020, covering the Redox Reactions 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.