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Mechanical Operations

Mechanical Operations
For benefication of iron ore, the most commonly used method is

Froth floatation
Jigging & tabling
Flocculation
None of these

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Mechanical Operations
Screw conveyors are

Suitable for sticky materials
Suitable for highly abrasive materials
Run at very high rpm
All of these

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Mechanical Operations
The inlet pressure in a constant rate filtration

Decreases gradually
None of these
Increases continuously
Remains constant

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Mechanical Operations
Length/diameter ratio of a ball mill is

< 1
1.5
1
> 1

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Mechanical Operations
To get a fine talc powder from its granules, the equipment used is

Gyratory crusher
Ball mill
Jaw crusher
Roller crusher

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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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