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General Principles and processes of Isolation of Elements
easy
The method of zone refining of metals is based on the principle of
A
Greater mobility of the pure metal than that of 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
Solution
Zone refining is based on the difference in solubility of impurities in molten and solid state of the metal. Semiconductor like $Si, Ge$ and $Ga$ are purified by this method.
Standard 12
Chemistry
