Question

what is the gas related at anode when fused sodium chloride is electrolysed​

Answer 1

Electrolysis of Molten NaCl

Electrolysis of Molten NaClIf sodium chloride is melted (above 801 °C), two electrodes are inserted into the melt, and an electric current is passed through the molten salt, then chemical reactions take place at the electrodes. ... Chlorine gas bubbles out of the melt above the anode.

Answer 2

During electrolysis of molten NaCl, sodium metal is obtained at the cathode (by reduction of sodium ions) and chlorine gas is obtained at the anode (by oxidation of chloride ions)