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Mechanical Operations

Mechanical Operations
Which of the following is not used as filter aid?

Asbestos
Rice husk
Diatomaceous earth
Purified wood cellulose

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Mechanical Operations
Grinding efficiency of a ball mill is of the order of __________ percent.

40-50
43835
75-80
90-95

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Mechanical Operations
To remove dirt from the flowing fluid, we use a

Clarifier
Strains
Gravity settler
Coagulant

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Mechanical Operations
Rittinger number which designates the new surface prduced per unit of mechanical energy absorbed by the material being crushed, depends on the

Ultimate strength of the material
Elastic constant of the material
State or manner of application of the crushing force
All of these

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Mechanical Operations
The reduction ratio for fine grinders is

20-40
43961
44124
As high as 100

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Mechanical Operations
Where the density difference of the two liquid phase to be separated is very small (as in milk cream separator), the most suitable separator is a

Disc bowl centrifuge
Batch basket centrifuge
Sparkler filter
Sharpies supercentrifuge

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