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Mechanical Operations

Mechanical Operations
Sphericity of pulverised coal is

1
∞
>1

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Mechanical Operations
Introduction of slurry in a plate and frame filter press is done through a plate in each frame. The plate of this filter has a __________ surface.

Plane
Either A or B
Ribbed
Curved

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Mechanical Operations
Fick's law relates to

None of these
Energy consumption
Final particle size
Feed size

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Mechanical Operations
Feed size of ≥ 25 cms can be accepted by

Rod mill
Fluid energy mill
Jaw crusher
Ball mill

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Mechanical Operations
For the preliminary breaking of hard rock, we use a

Ball mill
Squirrel-cage disintegrator
Gyratory crusher
Tube mill

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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.

Clarification
Flocculation
Classification
Sedimentation

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