In an industrial process,$40 \ kg$ of calcium is produced by electrolysis in $2 \ hours$. How much $kg$ of aluminum would be produced if the same current is passed for the same duration? (Atomic mass of $Ca = 40, Al = 27$)

The value of current required to deposit $0.972 \ g$ of chromium in $3 \ hours$ if the $E.C.E.$ of chromium is $0.00018 \ g \ C^{-1}$,is ............ $A$.

When a current of $X$ Faraday is passed through a solution of aluminium nitrate,$1 \ mol$ of $Al$ is deposited. Then,$X =$ . . . . . . ?

How long should aqueous $NaCl$ be electrolysed by passing $100 \ A$ current,so that $0.5 \ mol$ chlorine is released at anode?

In the electrolysis of an aqueous $NiI_2$ solution using $Ni$ electrodes,what happens to the mass of the cathode upon passing $1$ equivalent of charge? (Given: atomic mass of $Ni = 59$)

The chemical equivalents of copper and silver are $32$ and $108$ respectively. When copper and silver voltameters are connected in series and electric current is passed through for some time,$1.6 \ g$ of copper is deposited. Then,the mass of silver deposited will be .......... $g$.