Match the following items of List-I with those of List-II
List-I List-II
(A) Nickel | (I) Electrolytic refining |
(B) Titanium | (II) Zone refining |
(C) Germanium | (III) van-Arkel method |
(D) Copper | (IV) Mond process |
The correct answer is
I 
IV 
III
Text Solution
Verified by ExpertsC
(IV), 
(III), 
(II), 
(I)
The Mond process, used to purify nickel.
van Arkel method is used for refining zirconium or titanium. In this method, oxygen and nitrogen, present as impurity are removed by heating metal with iodine.
Zone refining is a very useful method to get metals with very high purity such as silicon and germanium.
Many metals, such as copper, zinc, tin, nickel, silver, gold etc. are refined by electrolysis. In this process, the impure metal is made the anode and a thin strip of pure metal is made the cathode. The solution of the metal salt is used as an electrolyte.
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