JEE Main 2026 Jan 21 Shift 1, Chemistry Q13: Balancing Of Redox Reactions

JEE Main2026Jan 21, Shift 1Chemistry

Q.

$M n O_{4}^{2 -}$ , in acidic medium, disproportionates to:

A
$M n_{2} O_{7}$ and $M n O_{2}$
B
$M n O_{4}^{-}$ and $M n O$
C
$M n O_{4}^{-}$ and $M n O_{2}$
D
$M n_{2} O_{7}$ and $M n O$

Solution

$3 M n O_{4}^{2 -} + 4 H^{+} \to 2 M n O_{4}^{-} + M n O_{2} + 2 H_{2} O$ .

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