In the reactions;${\rm{A}}{{\rm{s}}_2}{{\rm{S}}_3} + {\rm{HN}}{{\rm{O}}_3} \to {{\rm{H}}_3}{\rm{As}}{{\rm{O}}_4} + {{\rm{H}}_2}{\rm{S}}{{\rm{O}}_4} + {\rm{NO}}$, the element oxidized is/ are :

NEET UG CHEMISTRY MCQ: REDOX REACTIONS

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In the reactions;

\mathrm{A}{\mathrm{s}_2}{\mathrm{S}_3} + \mathrm{HN}{\mathrm{O}_3} \to {\mathrm{H}_3}\mathrm{As}{\mathrm{O}_4} + {\mathrm{H}_2}\mathrm{S}{\mathrm{O}_4} + \mathrm{NO}

, the element oxidized is/ are :

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Correct option: D

As and S both

Option D (As and S both) is correct because in the reaction, both Arsenic and Sulfur undergo oxidation.

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{I_2}

\mathrm{MnO}_4^ - + {\mathrm{C}_2}\mathrm{O}_4^{2 - } + {\mathrm{H}^ + } \to \mathrm{M}{\mathrm{n}^{2 + }} + \mathrm{C}{\mathrm{O}_2} + {\mathrm{H}_2}\mathrm{O}

\mathrm{MnO}_4^ -

{\mathrm{C}_2}\mathrm{O}_4^{2 - }

{\mathrm{H}^ + }