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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.
Solution
Zone refining is based on the principle that impurities are more soluble in molten metal than in solid metal.
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