Question
The method of zone refining of metals is based on the principle of
higher melting point of impurity than that of the pure metal
greater noble character of the solid metal than that of the impurity
greater solubility of the impurity in the molten state than in the solid.
greater mobility of the pure metal than that of the impurity.
Solution
C.
greater solubility of the impurity in the molten state than in the solid.
