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Mechanical Operations

Mechanical Operations
Gravity stamp mill is meant for the __________ crushing.

Ultrafine
Intermediate
Fine
Primary

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Mechanical Operations
Separation of solid suspended in liquid into a supernatant clear liquid and a denser slurry employs a process termed as the

Clarification
Flocculation
Sedimentation
Coagulation

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Mechanical Operations
Filtration should be stopped in a filter press, if the

Both A & B
Liquor stops flowing out to the discharge
Cake becomes very dense
Filtration pressure rises suddenly

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Mechanical Operations
Mass flow of granular solid (M) through a circular opening of dia, D follows

M ∝ D
M ∝ √D
M ∝ D³
M ∝ D²

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Mechanical Operations
200 mesh screen means 200 openings per

Inch
Cm²
Inch²
Cm

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Mechanical Operations
Washability curve based on float and sink test enables an assessment to be made of the possibility of cleaning a coal fraction based on the

Density separation
Size
Volatile matter content
Differential wettability

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