Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Compare hydrogen with alkali metals on the basis of their reducing power.

Answer 1

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Both alkali metals and hydrogen act as reducing agents. and reduces CuO to Cu.
$\text{CuO}$ + ${\text{H}}_2\to \text{Cu}$ + ${\text{H}}_2\text{O}$
$\text{CuO}$ + $\text{Na}$ → $\text{Cu}$ + ${\text{Na}}_2\text{O}$