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Zone Refining

Metals of hig...

Question

Metals of high purity (to be used in semiconductors) are obtained by zone-refining.
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Solution

Zone Refining (Fractional Crystallisation):
This method is employed to get metal of very high purity i,e. ultra pure samples of Ge Si, B,Ga,In. This method is based on the fact that impurities are more soluble than the pure metal in the melt .

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