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The method of zone relining of metal is ...

The method of zone relining of metal is based on the principle of `AIFMIT-2003)`

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

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The correct Answer is:
D
Zone refining is based on difference in solubility of impurity in its molten as well as solid state.
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