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

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

Options

(a) greater mobility of the pure metal than that of the impurity
(b) higher melting point of the impurity than that of the pure metal
(c) greater noble character of the solid metal than that of the impurity
(d) greater solubility of the impurity in the molten state than in the solid

Correct Answer:

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

Explanation:

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