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Mechanical Operations

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

Frother
Collector
Modifier
Activator

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Mechanical Operations
The value of 'angle of nip' is generally about

64°
52°
16°
32°

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Mechanical Operations
Soft & non-abrasive materials can be made into fines by

None of these
Compression
Cutting
Attrition

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

Froth floatation
None of these
Flocculation
Jigging & tabling

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Mechanical Operations
Which of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids ( > 50000 centipoise)?

Flat blade turbine
Helical screw
Curved blade turbine
Propeller

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

Jaw crusher
Gyratory crusher
Ball mill
Roller crusher

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