In the cell represented $Pb_{(s)}|Pb_{(1 \ M)}^{2+} || Ag_{(1 \ M)}^{+}|Ag_{(s)}$,the reducing agent is

Which of the following acts as an oxidising agent in a hydrogen-oxygen fuel cell?

State whether the following statements are True $(T)$ or False $(F)$ :
$1.$ Fuel cell is a kind of galvanic cell.
$2.$ Coal is used as fuel in fuel cell.

Which among the following statements is true for a Galvanic cell?

On the basis of the information available from the reaction $\frac{4}{3} Al + O_2 \to \frac{2}{3} Al_2O_3$,$\Delta G = -827 \ kJ \ mol^{-1}$ of $O_2$,the minimum emf required to carry out an electrolysis of $Al_2O_3$ is $............... \ V$

Which of the following mixtures is used as an electrolyte paste in a mercury cell?