B. Rotary
C. Sand
D. Press
B. Turbine agitators
C. None of these
D. Propellers
A. 70
C. 85
D. 35
A. Jaw crusher
B. Ball mill
D. Rod mill
A. Overall
B. None of these
D. Over medium
A. Centimetre
B. Micron
C. Screen size
A. Constant pressure
B. Varying pressure
D. Varying rate
A. 3.6 W.Dr.?
C. 3.6 V.W. ?
D. 3.6 V.W.Dr/?
A. Sulphates
B. Bi-carbonates
C. Carbonates
B. cos ? = (dr + df)/(dr + dp)
C. sin ? = (dr + dp)/(dr + df)
D. tan ? = (dr + dp)/(dr + df)
B. Tube
C. Pebble
D. Compartment
A. Surface area per unit mass
B. Sauter diameter
D. Specific surface ratio
A. Classifier
B. Dorr-thickener
D. Sedimentation tank
A. Vacuum leaf
B. Sparkler
D. Plate and frame
A. Cake
B. Filter medium
C. Channel carrying the slurry to the upstream side of the cake and filtrate away from the filter
E. ium
B. Comminution
C. Pulverisation
D. Dispersion
A. L.S
C. L.S/0.087
D. 0.01 L.S
B. Thickener
C. Clarifier
D. Classifier
A. Over-sizes are present in undersize fraction
C. Under-sizes are retained in oversize fraction
D. Screen capacity is abruptly increased
A. ?(LS)
B. 250 LS
C. LS
A. Metal cloth of monel or stainless steel
B. Glass cloth
D. Nylon
A. Fact that screening is more effective
C. Assumption that all particles in a single fraction are equal in size
D. None of these
B. Tailing
C. Concentrate
D. Middling
B. Angle of repose
C. Shatter index
D. Abrasion index
A. Clarification
B. Thickening
C. Froth floatation
A. None of these
C. Operating speed should be more than the critical speed
D. Fine feed requires a larger ball
A. Linear speed of the basket is doubled
B. Linear speed of the basket is halved
C. Capacity of centrifuge is increased
A. Gyratory crusher
B. Jaw crusher
C. Cone crusher
A. High power consumption in grinding
D. Poor grindability
A. 0.1
C. 0.4
B. Produces axial flow
C. Moves at very high speed
A. Different fluids
B. Same fluid
C. Same field of force
A. Smallest
B. Either A. or B.
C. Largest
A. Cresylic acid
B. Calcium carbonate
D. Sodium carbonate
A. Screw conveyor
B. Bucket elevator
D. Belt conveyor
A. Rotary vacuum filter
B. Batch basket centrifuge
A. Modifier
C. Collector
D. Activator
B. Separation efficiency
C. Concentration ratio
B. Decanters
C. Hydrocyclones
D. Thickeners
A. V/D.S
C. V/6D.S
D. D.S/V
A. Coagulant
D. Gravity settler
A. Kneading
C. Dispersion
A. Jigging
C. Tabling
D. Classification
B. Capacity and effectiveness of the screen is increased
C. Screening becomes progressively easier
A. 3.6 W.V.?
B. 3.6 W.D.V
C. 3.6 D.V.?
A. P/m = K/ ?Dp
D. P/m = K . ln D? sa/D? sb
B. Rate of filtration is constant
C. Resistance decreases with time
D. Rate of filtration increases with time
A. 8 to 10
B. 15 to 20
D. 10 to 15
A. Sharpies super-centrifuge
C. Dorr Oliver rake classifier
D. Hydrocyclones
A. 12/D.?
C. 4/D.?
D. 2/D.?
Showing 101 to 150 of 445 mcqs