Question

Zone refining is a method to obtain ____________

Answer 1

Zone refining:

• Zone Refining is a method used for purifying crystals and impurities in the metal to obtain metals with very high purity i.e. ultra-pure metals.
• This process is very effective in refining high-purity metals and in the removal of impurities from semiconducting elements such as Silicon $\mathrm{Si}$, Gallium $\mathrm{Ga}$ and Germanium $\mathrm{Ge}$.

• It is based upon the principle that impurities are more soluble in a molten state as compared to the solid-state of metals.

Hence, zone refining is a method to obtain ultra-pure metals.