Which method of seperation is also known as gravity seperation?
A
Hydraulic washing
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B
Magnetic seperation
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C
Froth floatation
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D
Leaching
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Solution
The correct option is A Hydraulic washing Principle: Hydraulic washing seperation method depends upon the difference in the gravity of mineral and gangue.
An upward stream of running water is used to wash the powdered ore; Lighter gangue particles are washed away and heavier ores are left behind. It is also known as gravity seperation.