(D) Zone refining is based on the principle that the impurities are more soluble in the molten state of the metal than in the solid state. As the heat

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The solubility of impurities is higher in the molten state than in the solid state.

(D) Zone refining is based on the principle that the impurities are more soluble in the molten state of the metal than in the solid state. As the heater moves,the pure metal crystallizes out of the melt,while the impurities pass into the adjacent molten zone.

Class 12 Chemistry General Principles and Processes of Isolation of Elements Refining of crude Metal

Easy

On which principle does the zone refining method work?

A
The mobility of pure metal is higher than that of impurities.
B
The melting points of impurities are higher than those of the metal.
C
The inertness of the metal is higher than that of impurities.
D
The solubility of impurities is higher in the molten state than in the solid state.