Which of the following combinations will prod | vedclass

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(C) The reaction between $Zn$ metal and aqueous $NaOH$ produces sodium zincate and hydrogen gas: $Zn + 2NaOH_{(aq)} \longrightarrow Na_2ZnO_2 + H_2 \u

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$Zn$ metal and $NaOH_{(aq)}$

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(C) The reaction between $Zn$ metal and aqueous $NaOH$ produces sodium zincate and hydrogen gas: $Zn + 2NaOH_{(aq)} \longrightarrow Na_2ZnO_2 + H_2 \uparrow$ In other options,$Fe$ and $Cu$ react with conc. $HNO_3$ to produce nitrogen oxides ($NO_2$ or $NO$) due to the oxidizing nature of $HNO_3$,and $Au$ reacts with $NaCN$ to form a complex,not $H_2$ gas.

Which of the following combinations will produce $H_2$ gas?

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