JEE Main 2022 — D And F Block Elements Question with Solution
From: JEE Main 2022 (Online) 29th July Morning Shift
Question
In neutral or faintly alkaline medium, being a powerful oxidant can oxidize, thiosulphate almost quantitatively, to sulphate. In this reaction overall change in oxidation state of manganese will be :
Choose an option
Show full solutionCorrect option: D
Correct answer
D3
Step-by-step explanation
In neutral or Faintly alkaline medium, thiosulphate is oxidised almost quantitatively to sulphate ion according to reaction given below,
Here the changes from to
Thus overall change in its oxidation number would be of 3 .
Here the changes from to
Thus overall change in its oxidation number would be of 3 .
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This is a previous-year question from JEE Main 2022, 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.