Brine solution on electrolysis using inert electrodes gives ----- and ----- at anode and cathode respectively.

Cathode:
Discharge potnetial of Na⁺ > H₂O
$2{\mathrm{H}}_2\mathrm{O}+2{\mathrm{e}}^{-}\to {\mathrm{H}}_2+2{\mathrm{OH}}^{-}$
Anode :
Cl^- is discharged at anode (explained on the basis of over potential)
$2{\mathrm{Cl}}^{-}\to {\mathrm{Cl}}_2+2{\mathrm{e}}^{-}$
C) Catalyst increases the magnitude of rate constant