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D and F Block Elements question

2022 · 26 Jul · Shift 1 · Q5
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  5. /2022 · 26 Jul · Shift 1 · Q5

D and F Block Elements question

2022 · 26 Jul · Shift 1 · Q5

JEE MainChemistryD and F Block ElementsMCQ+4 / −1
The dark purple colour of KMnO4\mathrm{KMnO}_{4}KMnO4​ disappears in the titration with oxalic acid in acidic medium. The overall change in the oxidation number of manganese in the reaction is :
  1. A
    5
  2. B
    1
  3. C
    7
  4. D
    2
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