MetallurgyHard
Question
In electrolytic refining of lead, electrolyte is consist of :
Options
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 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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