The charge required for the reduction of $1 \ mol$ of $MnO_4^-$ to $MnO_2$ is ............ $F$.

During the electrolysis of cryolite,aluminium and fluorine are formed in $........$ molar ratio :

If $6.5 \ g$ of $Mg$ is deposited during the electrolysis of fused $MgCl_2$,what will be the volume of chlorine gas (in $L$) discharged at the electrode at $STP$?

Which of the following compounds gives ethane upon electrolysis of its aqueous solution?

Which of the following pairs undergoes easier oxidation at the anode?

If $1 \ A$ of current is passed through $CuSO_4$ solution for $10 \ s$,then the number of copper ions deposited at the cathode will be about