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Zone refining is based on the principle that ___________.
(i) impurities of low boiling metals can be separated by distillation.
(ii) impurities are more soluble in molten metal than in solid metal.
(iii) different components of a mixture are differently adsorbed on an absorbent.
(iv) vapours of the volatile compound can be decomposed in pure metal.
Answers (1)
The answer is the option (ii). The basic principle of zone refining method is that impurities are more soluble in molten metal compared to the solid state of the metal.
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