Electrostatic separation of minerals from each other is based on their differences in the following property ?

Electrostatic separation of minerals from each other is based on their

1.	Electrostatic separation of minerals from each other is based on their differences in the following property ?
A.	Densities
B.	Magnetic permeabilities
C.	Electrical conductivities
D.	Hardness
Answer» D. Hardness

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Electrostatic separation of minerals from each other is based on their differences in the following property ?

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