Ncert Exercises & Solutions

Zone refining is based on the principle that-

1.	Impurities of low-boiling metals can be separated by distillation.
2.	Impurities are more soluble in molten metal than in solid metal.
3.	Different components of a mixture are differently adsorbed on an adsorbent.
4.	Vapours of volatile compounds can be decomposed in pure metal.