The mass of silver deposited when a charge of $241.25 \ C$ is passed through a solution of $AgNO_3$ is = .......

If $0.5 \, A$ current is passed through an acidified silver nitrate solution for $10 \, min$,the mass of silver deposited on the cathode is ........... $g$ (equivalent weight of silver $= 108$).

In order to separate oxygen from one mole of $H_2O$,the required quantity of electricity in coulombs is:

The amount of metal deposited at the cathode on passing an electric current of $0.75 \ A$ in an aqueous ferric sulphate solution for $30 \ min$ will be - ........... $g$ (atomic weight of $Fe = 56$).

The amount of charge required for obtaining one mole of $Al$ from $Al^{3+}$ is:

The number of $Faradays$ needed to reduce $4 \ g$ equivalents of $Cu^{++}$ to $Cu$ metal will be: