Which one of the following is an example of disproportionation reaction?

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Disproportionation reaction, also sometimes called dismutation reaction, is basically a type of redox reaction involving simultaneous reduction and oxidation of atoms of the same element from one oxidation state (OS) to two different oxidation states.

$\overset{+ 6}{3 {MnO}_{4}^{2 -}} + 4 H^{+} ⟶ \overset{+ 7}{2 {MnO}_{4}^{-}} + \overset{+ 4}{{MnO}_{2}} + 2 H_{2} O$

Chemistry - Redox Reactions Question with Solution | TestHub

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