Question

Match the items of column I with items of column II

Answer 1

Since the boiling point of Zinc is way back at 1180 K, the zinc formed immediately vaporizes and distills over leaving behind non-volatile impurities such as Cadmium, Lead and Iron. This gas containing zinc vapours is collected and cooled to yield solid zinc. This crude metal is called Spelter. Hence, $Zn$ is separated by distillation.

Liquation is a metallurgical method for separating metals from an ore or alloy. It is used for purification of $Cu$ and $Sn$.

Zone refining is a method of purifying a crystalline solid, typically a semiconductor or metal, by causing a narrow molten zone to travel slowly along an otherwise solid rod or bar to one end, at which impurities become concentrated. It is used for purification of $Ge$

Vapour phase refining. Vapour phase refining is the process of refining metal by converting it into its volatile compound and then, decomposing it to obtain a pure metal. This method is used to purify $Ni$ by Mond's process.

Hence, $A-4$, $B-3,5$, $C-1$, $D-2$.