The process of removing lighter gangue particles by washing in a current of water is called
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a
Levigation (or) gravity separation
b
Liquation
c
Leaching
d
Cupellation
answer is A.
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Detailed Solution
Gangue particles are lighter than ore particles; In such case, the powdered impure ore is washed with upward stream of water. So that lighter impurities get washed away. This method is Levigation (or) hydraulic washing (or) gravity process.