# Which of the following is reduced by $H_2O_2$ in acid medium

$\begin{array}{1 1}(a)\;KMnO_4\\(b)\;KI\\(c)\;FeSO_4\\(d)\;K_4Fe(CN)_6\end{array}$

Max oxidation state of 'Mn' is $+7$.So $KMnO_4$ under goes reduction.
Hence (a) is the correct answer.
answered Jan 23, 2014