Question
Question: Zone refining is based on the principle that \_\_\_\_\_\_\_....
Zone refining is based on the principle that _______.
A
Impurities of low boiling metals can be separated by distillation.
B
Impurities are more soluble in molten metal than in solid metal
C
Different components of a mixture are differently adsorbed on an adsorbent.
D
Vapours of volatile compound can be decomposed in pure metal
Answer
Impurities are more soluble in molten metal than in solid metal
Explanation
Solution
When molten solution of impure metal is allowed to cool, the impurities remain preferentially dissolved in the melt and pure metal will emerge in the solid phase.