Chemical Engineering - Mechanical Operations

36.
Separation of solid suspended in liquid into a supernatant clear liquid and a denser slurry employs a process termed as the
coagulation
flocculation
sedimentation
clarification
Answer: Option
Explanation:
No answer description is available. Let's discuss.

37.
Ultrafine grinders operate principally by
slow compression
impact
attrition
cutting action
Answer: Option
Explanation:
No answer description is available. Let's discuss.

38.
Half the angle of nip, (α), for a roll crusher is given by (where, dr, dp and df are diameters of crushing rolls, feed particles and rolls gap respectively).
Answer: Option
Explanation:
No answer description is available. Let's discuss.

39.
Which of the following comes in the category of primary crusher for hard and tough stone ?
Jaw crusher
Cone crusher
Gyratory crusher
None of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

40.
Crushing efficiency of a machine ranges between __________ percent.
0.1 to 2
5 to 10
20 to 25
50 to 70
Answer: Option
Explanation:
No answer description is available. Let's discuss.