NEET UG CHEMISTRY MCQ: HYDROGEN

Option A ($\mathrm{Pb}{\mathrm{O}_\mathrm{2}}\mathrm{ + }\,{\mathrm{H}_\mathrm{2}}{\mathrm{O}_\mathrm{2}} \to \mathrm{PbO}\,\,\mathrm{ + }\,{\mathrm{H}_\mathrm{2}}\mathrm{O}\,\,\mathrm{ + }\,{\mathrm{O}_\mathrm{2}}$) is correct because in this reaction, $H_2O_2$ reduces $PbO_2$ to $PbO$ and itself gets oxidized to $O_2$, thus acting as a reducing agent.