A. Have the same diameter
B. Are rotated towards each other
C. Run either at the same or different speeds
D. All A., B. and C.
A. Collector
B. Frother
C. Modifier
D. Activator
A. Forged/cast steel
B. Lead
C. Cast iron
D. Alloy steel
A. Mixing highly viscous pastes
B. Blending immiscible liquids
C. Mixing liquids at very high temperature (> 250 °C)
D. None of these
A. D
B. 1/D
C. D2.5
D. 1/D2.5
A. Calcite
B. Fluorspar
C. Quartz
D. Cassiterite
A. Air
B. Water
C. Either A. or B.
D. Neither A. nor B.
A. Talc
B. Coal
C. Iron core
D. Wheat
A. 20
B. 12
C. 8
D. 2
A. Banbury mixer
B. Pug mill
C. Impact wheels
D. Kneader