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Mechanical Operations

Mechanical Operations
Cyclones are used primarily for separating

Liquids
Solids
Solids from fluids
Solids from solids

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Mechanical Operations
Agglomeration of individual particles into clusters (flocs) is called flocculation. To prevent flocculation, the most commonly used dispersing agents are

Sulphates
Bi-carbonates
Carbonates
Silicates & phosphates

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Mechanical Operations
The opening of a 200 mesh screen (Taylor series) is

0.0047 cm
0.0074 cm
74 mili-microns
0.0074 mm

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Mechanical Operations
The most suitable equipment for the transportation of 200 mesh size particles is a

Bucket elevator
Pneumatic conveyor
Screw conveyor
Belt conveyor

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Mechanical Operations
Which of the following is the most suitable for handling fibrous and dense slurries?

Propeller agitator
Radial propeller agitator
Turbine agitator
Cone type agitator

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Mechanical Operations
Ball mills and tube mills with flint or porcelain balls are used for size reduction of

Asbestos
Limestone
Rubber
Non-metallic ores

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