In which of the following reactions of hydrogen peroxide acts as an oxidizing agent (either in acidic, alkaline, or neut…

In which of the following reactions of hydrogen peroxide acts as an oxidizing agent (either in acidic, alkaline, or neutral medium)?
(i) \(2F{e}^{+2}+{H}_{2}{O}_{2}\to\)
(ii) \(2{\mathrm{MnO}}_{4}^{-}+6{\mathrm{H}}^{+}+5{\mathrm{H}}_{2}{\mathrm{O}}_{2}\to\)
(iii) \({I}_{2}+{H}_{2}{O}_{2}+2O{H}^{-}\to\)
(iv) \(M{n}^{+2}+{H}_{2}{O}_{2}\to\)