Which of the following process does not involve heating?

Which of the following process does not involve heating?
  1. Calcination
  2. Smelting
  3. Roasting
  4. Levigation

Solution

Levigation or gravity separation is the process of separating the light impure particles from the heavier ore particles by washing in current of water.

Asked in: AP EAMCET 2015

Practice more General Principles and Processes of Isolation of Metals questions on Aicharya