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Question

Zone refining process is used for the:
  1. Purification of metal
  2. Concentration of an ore
  3. Reduction of a metal oxide
  4. Purification of an ore

A
Concentration of an ore
B
Reduction of a metal oxide
C
Purification of metal
D
Purification of an ore
Solution
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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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