One of the methods of purification of leach liquor is ion exchange, wh

1.	One of the methods of purification of leach liquor is ion exchange, which involves_________________?
A.	Exchange between two liquid phases
B.	Exchange between a gaseous phase and a liquid phase
C.	Exchange between a liquid phase and an organic resin phase
D.	Exchange between a solid phase and a gas phase
Answer» D. Exchange between a solid phase and a gas phase

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One of the methods of purification of leach liquor is ion exchange, which involves_________________?

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