In the reaction, ${\rm{NaH}} + {{\rm{H}}_2}{\rm{O}} \to {\rm{NaOH}} + {{\rm{H}}_2}$:

Both NaH and ${H_2}O$ are reduced

JEE CHEMISTRY MCQ: REDOX REACTIONS

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In the reaction,

\mathrm{NaH} + {\mathrm{H}_2}\mathrm{O} \to \mathrm{NaOH} + {\mathrm{H}_2}

View answer and explanation

Correct option: A

{H^ - }

is oxidised

The correct answer is A. In the reaction NaH + H2O -> NaOH + H2, H- in NaH is oxidized to H2.

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\mathrm{H}

2 \mathrm{KClO}_3 \longrightarrow 2 \mathrm{KCl}+3 \mathrm{O}_2

\mathrm{HNO}_3

\mathrm{HNO}_3

\mathrm{MnO}_4^{-}(\mathrm{aq})+\mathrm{Br}^{-}(\mathrm{aq})+\mathrm{H}_2 \mathrm{O} \longrightarrow 2 \mathrm{MnO}_2(\mathrm{aq})+\mathrm{BrO}_3^{-}(\mathrm{aq})+2 \mathrm{OH}^{-}(\mathrm{aq})

\mathrm{Br}

-1

+5.