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JEE Main20207 Jan 2020Evening ShiftChemistryGeneral Principles and Processes of Isolation of MetalsActual

The refining method used when the metal and the impurities have low and high melting temperatures, respectively, is

Options

  1. Aliquation.
  2. Bvapour phase refining.
  3. Czone refining.
  4. Ddistillation.

Correct answer

A. liquation.

Step-by-step solution

Liquation method is used when the melting point of metal is less compare to the melting point of the associated impurity. In liquation process, the impure metal is heated on slopy hearth of furnace, due to less melting point, metal melts first and flow down leaving impurities behind.

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