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Chemical Engineering - Mechanical Operations

Exercise : Mechanical Operations - Section 3
6.
The sphericity of a cylinder of 1 mm diameter and length 3 mm is
0.9
0.78
0.6
0.5
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Pulverised coal passing through 200 mesh screen has a diameter of 0.074 mm (74 micron). The same passing through 50 mesh screen will have a dia of __________ mm.
0.007
0.30
50
0.014
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
What is the selectivity index, if the grade of tailings & concentrate is the same ?
0
∞
1
0.5
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
The most suitable equipment used to devulcanise rubber scrap and to make water dispersion & rubber solution is a
boundary mixer.
propeller agitator.
sharpies centrifuge.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Traces of solids are removed from, liquid in a
classifier
clarifier
sparkler filter
rotary vacuum filter
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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