Ultra centrifuges are used for the separation of _____________ solid particles?
A. Coarse
B. Fine
C. Colloidal
D. Dissolved
A. Coarse
B. Fine
C. Colloidal
D. Dissolved
A. Sizing
B. Sorting
C. Classification
D. Flocculation
A. 0.9
B. 0.78
C. 0.6
D. 0.5
A. Dicers
B. Knife cutters
C. Slitters
D. Tube mills
A. 1.5
B. 1
C. √2
D. None of these
A. Heavy loads & short runs
B. Small loads & long runs
C. Heavy loads & long runs
D. None of these
A. Trough washer
B. Baum jig washer
C. Spiral separator
D. Froth floatation
A. [(DP/18). (ρs – ρ/μ)] ω2r
B. [(DP2/18). (ρs – ρ/μ)] ω2r
C. [(DP/18). (ρs – ρ/μ)] ω2r2
D. [(DP2/18). (ρs – ρ/μ)] ω2r
A. Is defined as the ratio of surface area of a sphere having the same volume as the particle to the
actual surface area of the particle
B. Has the dimension of length
C. Is always less than 1
D. Is the ratio of volume of a sphere having the same surface area as the particle to the actual
volume of the particle
A. Size
B. Specific gravity
C. Terminal velocities in the same fluid & in the same field of force
D. None of these