The method of zone refining of metals is based on the princ…

Chemistry General Principles and Processes of Isolation of Elements ( Not In Syllabus ) General Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

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

Greater mobility of the pure metal than that of impurity

Higher melting point of the 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

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The correct answer is:

Zone refining method is based on the principle that an impure molten metal on gradual cooling will deposit crystals of the pure metal, while the impurities will be left in the remaining part of the molten metal.

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