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

Assertion : On increasing dilution,the specific conductance keeps on increasing.
Reason : On increasing dilution,the degree of ionisation of a weak electrolyte increases and the number of ions per unit volume decreases.

During the electrolysis of fused $NaCl$,which reaction occurs at the anode?

The products obtained at the cathode and anode respectively during the electrolysis of aqueous $K_2SO_4$ solution using platinum electrodes are

The cell used for the electrolysis of fused $NaCl$ is

Extraction of chlorine from brine solution is based on