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Mechanical Operations

Mechanical Operations
In froth floatation, chemical agent added to cause air adherence is called

Frother
Activator
Collector
Modifier

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Mechanical Operations
Size reduction mechanism used in Jaw crushers is

Compression
Impact
Cutting
Attrition

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Mechanical Operations
Dry powdery solid materials are transported by a __________ conveyor.

Bucket
Screw
None of these
Belt

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Mechanical Operations
Specific surface area is the surface area of a unit __________ of materials.

Either A or B
Neither A nor B
Volume
Weight

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Mechanical Operations
Sphericity of a cubical particle, when its equivalent diameter is taken as the height of the cube, is

√2
√3
0.5
1

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Mechanical Operations
Sizing of very fine particles of the order of 5 to 10 microns is done by elutriation, which is a __________ operation.

Classification
Flocculation
Clarification
Sedimentation

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