Question

The pair of metals refined by "vapour phase refining" is

• A. Ni, Cu
• B. Sn, Ni
• C. Zr, Ni
• D. Cu, Zr

Answer 1

Answer: (C)

Zr, Ni

Answer 2

Vapour phase refining method is used for refining $Ni , Ti , V, Th, Zr$ metals etc. This method is based upon the principle that the impure metal is first converted into suitable volatile compound which on being heated, gets decomposed to give pure metal.