Q1075
Ultra purification of a metal is done by :
A.
Slugging
B.
Zone melting
AnswerC.
Smelting
D.
Leaching
Answer: Option B
Solution
Answer: Option B
Solution:
When metals are required in a ultra pure state, the zone refining method is used. The principle-employed states that the impurities, which lower the melting point of a metal remain preferentially dissolved in the liquid phase and purer metal will emerge in the solid phase.