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UOPS 4 SEDIMENTATION Exam
Questions With Correct Answers.
D - answer✔If the motion of a particle is impeded by other particles, which will happen when
the particles are near each other even though they are not actually colliding, the process is
called
a. free settling
b. unhindered settling
c. gravity settling
d. hindered settling
A - answer✔The drag coefficient in hindered settling is ___ compared to free settling.
a. greater than
b. less than
c. constant
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d. varying
C - answer✔The operation by which solids are separated from liquids due to difference in their
respective densities is
a. screening c. sedimentation
b. adsorption d. absorption
D - answer✔The separation of solid particles into several size fractions based upon the settling
velocities in a medium is called
a. settling c. flotation
b. filtration d. classification
B - answer✔Device in which a current of air separates particles with different sedimentation
velocities.
a. agitator
b. air elutriator
c. classifier
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