Question

Name any two metals that can be obtained by the process of electro refining of metal

Answer 1

Many metals like Copper,zinc,tin,lead,Nickel,silver,gold are refined electrolytically.

for the refining of impure metal by electrolysis

1) A thick block of impure metal is made anode (it is connected to the positive terminal of the battery)

2)a thin strip of the pure metal is made cathode (it is connected to the negative terminal of the battery)

3) A water soluble salt of the metal to be refined is taken as electrolyte

On passing electric current in the metal dissolved from the anode and goes into the electrolytic solution and pure metal from the electrolyte deposits on the cathode. the soluble impurities present in the impure metal go into the solution whereas the insoluble impurities settle down at the bottom of the anode and anode mud