Question: Pick out the wrong statement: Magnetic separation method can be employed to treat both dry & wet ores Reduction ratio in crushing operation is defined

Pick out the wrong statement:
Magnetic separation method can be employed to treat both dry & wet ores
Reduction ratio in crushing operation is defined as the ratio of minimum feed size to the maximum product size
Gyratory crusher is used for coarse crushing
Screens are of stationary, moving and vibratory types

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