Question

In alkaline medium, the reaction of hydrogen peroxide with potassium
permanganate produces a compound in which the oxidation state of Mn is

• A. 2
• B. 3
• C. 4

Answer 1

The correct option is C 4

$2Mn{O}_4^{-}\left(aq\right)+3H_2{O}_2\left(aq\right)\to 2Mn{O}_2\left(s\right)+2H_{2}O\left(l\right)+3O_2\left(g\right)+2O{H}^{-}\left(aq\right)$
Oxidation state of Mn in $Mn{O}_2$ is +4.