Refining is

In electrolytic fefining of cooper, pure Cu os used as anode. (B) Zone refining is based on the principle that impurities are more solutble in the melt than in the solid states of the metal. (D) Very pure Zr may be obtained by Galvanisation. (E) In copper smelting hot air is used to convery Cu_(2) S to CuSO_(4).

Refining of Tin can be done by

Describe a method for refining nickel.

In zone - Refining method the molten zone :

What is meant by electrolytic refining? Give example.

Petroleum refining invovles a) distillation b) cracking c) reforming

Match the following : {:("List-I","List-II"),((1)"vanArkel method",(1)"Manufacture of caustic soda"),((B)"Solvay process",(2)"Purification of Titanium"),((C)"Cupellation",(3)"Manufacture of" Na_(2)CO_(3)),((D)"Poling",(4)"Purification of copper"),(,(5)"Refining of silver"):}

Write note on zone refining .

Outline the principles of refining of metals by the following methods. (a)Zone refining (b) Electrolytic refining (c) poling (d) Vapour phase refining.

Outline the principles of refining of metals by the following methods. zone refining