Which of the following substances conducts electricity?

Extraction of chlorine from brine solution is based on

Predict the products of electrolysis in each of the following:
$(i)$ An aqueous solution of $AgNO_3$ with silver electrodes.
$(ii)$ An aqueous solution of $AgNO_3$ with platinum electrodes.
$(iii)$ $A$ dilute solution of $H_2SO_4$ with platinum electrodes.
$(iv)$ An aqueous solution of $CuCl_2$ with platinum electrodes.

The product obtained at the anode when $50 \%$ $H_2SO_4$ aqueous solution is electrolysed using platinum electrodes is:

Which of the following is $NOT$ produced during the electrolysis of brine solution?

In the electrolysis of aqueous copper sulphate $(CuSO_4)$ using inert electrodes,the gases evolved at the anode and cathode are,respectively: