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- The refining method used when the metal and the impurities have low and high melting temperatures, respectively is: Option: 1 vapour phase refining Option: 2 distillation Option: 3
- #Chemistry
- #Engineering
- #General Principles and processes of Isolation Elements
- #Joint Entrance Examination Main
The refining method used when the metal and the impurities have low and high melting temperatures, respectively is:
Option: 1 vapour phase refining
Option: 2 distillation
Option: 3 liquation
Option: 4 zone refining
Answers (1)
As we have learnt,
Liquation -
In this method, a low melting metal like a tin can be made to flow on a sloping surface. In this way, it is separated from higher melting impurities.
-
Liquation, a technique for separating constituents of ore, a metal or an alloy by partial melting. When the material is heated to a temperature where one of the constituents melts and the other remains solid, the liquid constituent can be drained off.
Therefore, Option(3) is correct.
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