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Question
Zone refining is based on the principle that ______.
Options
impurities of low boiling metals can be separated by distillation.
impurities are more soluble in molten metal than in solid metal.
different components of a mixture are differently adsorbed on an adosrbent.
vapours of volatile compound can be decomposed in pure metal.
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Solution
Zone refining is based on the principle that impurities are more soluble in molten metal than in solid metal.
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