Sphericity of pulverised coal is__________________?
Sphericity of pulverised coal is__________________?
A. 1
B. < 1
C. > 1
D. ∞
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Out of the following size reduction equipments, the maximum feed size can be accepted by the__________________?
Out of the following size reduction equipments, the maximum feed size can be accepted by the__________________?A. Tube mill
B. Ball mill
C. Jaw crusher
D. Jet pulveriserPick out the material having minimum Rittinger’s number?
Pick out the material having minimum Rittinger’s number?A. Calcite
B. Pyrite
C. Quartz
D. GalenaGrindability of a material does not depend upon its_____________________?
Grindability of a material does not depend upon its_____________________?A. Elasticity
B. Hardness
C. Toughness
D. SizeWhich one is a filter aid ?
Which one is a filter aid ?A. Canvas fabric
B. Diatomaceous earth
C. Calcined lime
D. None of theseWhich of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids (> 50000 centipoise) ?
Which of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids (> 50000 centipoise) ?A. Propeller
B. Helical screw
C. Flat blade turbine
D. Curved blade turbineA _____________ mixer resembles a ball mill without balls?
A _____________ mixer resembles a ball mill without balls?A. Banbury
B. Pug mill
C. Tumbling
D. Pan