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The method of zone refining of metals is...

The method of zone refining of metals is based on the principle of :

A

greater solubility of the impurities in the molten state than in the solid

B

greater solubility of pure metal than that of the impurity

C

higher melting point of the impurity than that of the pure metal

D

greater noble character of the solid metal than that of the impurity

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The correct Answer is:
A
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