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Mechanical Operations

Mechanical Operations
For the transportation of ultrafine particles, the equipment used is a........conveyor.

Screw
Pneumatic
Belt
None of these

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Mechanical Operations
The material is crushed in a gyratory crusher by the action of

Compression
Cutting
Impact
Attrition

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Mechanical Operations
As particle size is reduced

None of these
Capacity and effectiveness of the screen is increased
Screening becomes progressively more difficult
Screening becomes progressively easier

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Mechanical Operations
Separation of materials into products based on the difference of their sizes is called

Classification
Flocculation
Sizing
Sorting

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Mechanical Operations
Filtration rate through a filter cake is proportional to (where, S = filtering surface R = specific cake resistance μ = viscosity of the filtrate)

1/μ
S
1/R
All of these

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Mechanical Operations
Additives used for promoting the floccula-tion of particles is a/an

Surface active agent
Both A & B
Electrolyte
Neither A nor B

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