A. Decantation
B. Flocculation
C. Sedimentation
D. Classification
Related Mcqs:
- The capacity of a classifier in ‘tons of solid/hr’ is given by (where, A = cross-sectional area in m2, V = rising velocity of fluid in m/sec, S = percentage of solids in the suspension by volume, ρ = density of solids in kg/m3)_________________?
A. 3.6 AVS.ρ
B. 3.6 A.V.ρ
C. 3.6 A.S. ρ
D. 3.6 AVS/ρ
Answer: Option - If a force greater than that of gravity is used to separate solids & fluids of different densities, the process is termed as the __________________?
A. Sedimentation
B. Flocculation
C. Dispersion
D. Centrifugation - Cement clinker is reduced to fine size by a _____________________?
A. Roll crusher
B. Ball mill
C. Tube mill
D. Hammer mill - The optimum moisture content in solids to be crushed/ground ranges from _______________ percent?
A. 3 to 4
B. 8 to 10
C. 10 to 15
D. 15 to 20 - Which of the following is the most suitable filter for separation of abrasive solids suspended in a corrosive liquid ?
A. Sand bed filter
B. Plate and frame filter press
C. Vacuum filter
D. Batch basket centrifuge - _____________ is the most suitable for compounding rubber and plastic solids ?
A. Banbury mixer
B. Pan mixer
C. Pug mill
D. Charge can mixer - For coarse reduction of hard solids, use ____________________?
A. Impact
B. Attrition
C. Compression
D. Cutting - A suspension of glass beads in ethylene glycol has a hindered settling velocity of 1.7 mm/s, while the terminal settling velocity of a single glass bead in ethylene glycol is 17 mm/s. If the Richardson-Zaki hindered settling index is 4.5, the volume fraction of solids in the suspension is_____________?
A. 0.1
B. 0.4
C. 0.6
D. None of these - The work index in Bond’s law for crushing of solids has the following dimensions__________________?
A. No units (dimensionless)
B. kWh/ton
C. kW/ton
D. kWh.m1/2/ton - Grizzlies are used for separating _____________ solids?
A. Coarse
B. Fine
C. Any size
D. None of these
