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JEE Main 20207 JanuaryEvening Shift
Exam
JEE Main
Year
2020
Date
7 January
Shift
Evening Shift
Subject
Chemistry
Chapter
General Principles and Processes of Isolation of Metals

JEE Main 2020 · 7 January · Evening Shift · Chemistry · General Principles and Processes of Isolation of Metals

The refining method used when the metal and the impurities have low...

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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