Name the process from which chlorine is obtained as a by-product.What will happen if an aqueous solution of Na Cl is subjected to electrolysis?

Explanation

In manufacture of NaOH by Castrer Kellner cell,
In manufacture of Na by Down.s cell. Exrractión of metals like Na ,K, Mg, Ca etc.
.H_2 O(1) rarr H^+(aq)+OH^-(2 q).
At anode: .2 Cl^-(aq)+2 e^- rarr Cl_2(~g).
At cathode: .2 H^+(aq)+2 e^- rarr H_2(~g).