State the principle of refining of metal by the following methods : ( – InterviewSolution

1.	State the principle of refining of metal by the following methods : (a) Zone refining (b) Electrolytic refining (c) Vapour phase refining
Answer» Solution :(a) The impurities are more soluble in the melt than in the SOLID STATE ofthe METAL. (b) Impure metal is made to act as ANODE, while the strip of same metal in pureform as CATHODE.

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