Chemical Engineering - Mechanical Operations

31.
For raschig rings, the sphericity is
0.5
1
<1
3
Answer: Option
Explanation:
No answer description is available. Let's discuss.

32.
For Indian standard (IS) screens, the mesh number is equal to its aperture size expressed to the nearest deca-micron (0.01 mm). Aperture width of IS screen of mesh number 50 will be approximately __________ microns.
5
50
500
5000
Answer: Option
Explanation:
No answer description is available. Let's discuss.

33.
__________ mills are termed as disintegrators.
Cage
Compartment
Pebble
All tumbling
Answer: Option
Explanation:
No answer description is available. Let's discuss.

34.
Supporting legs of a plate and frame filter is normally made of
stainless steel
cast iron
high speed steel
wooden plank
Answer: Option
Explanation:
No answer description is available. Let's discuss.

35.
The cummulative mass fraction of particles smaller than size dj for a collection of Ni particles of diameter di and mass mi (i = 1, 2, 3, ...... ∞) is given by
Answer: Option
Explanation:
No answer description is available. Let's discuss.