Mechanical Operations
In case of grinding in a ball mill

All of these
Its capacity decreases with increasing fineness of the products
Wet grinding achieves a finer product size than dry grinding
Grinding cost and power requirement increases with increasing fineness of the products

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Mechanical Operations
A pebble mill

Employs flints or ceramic pebbles as the grinding medium
Is a ball mill
Both B and C
Is a tube mill lined with ceramic or other non-metallic liner

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