Which of the following elements is obtained industrially by the electrolysis of an aqueous solution of its compound?

Which of the following elements is extracted industrially by the electrolysis of its aqueous solution?

$A$ solution of sodium sulphate in water is electrolysed using platinum electrodes. The products at cathode and anode are respectively

The passage of current liberates $H_2$ at cathode and $Cl_2$ at anode. The solution is

Identify True $(T)$ or False $(F)$ for the following statements :
$(i)$ In electrolytes,current flows due to electron displacement.
$(ii)$ When current flows from metal,the composition of the metal changes.
$(iii)$ Due to the passage of $DC$ current through the electrolytic solution,a reaction occurs.

$1 \ C$ of electricity deposits: