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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
Which of the following may prove unsuitable for filtering volatile liquids?

Centrifugal filter
Pressure filter
Vacuum filter
Gravity filter

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Mechanical Operations
In the cyclone separator used for separation of dust from dust laden gas, the gas

Both B and C
Develops a helical motion inside the chamber
Enters the cyclone from the top
Is admitted tangentially at high velocity

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Mechanical Operations
Width and speed of a conveyor belt depends upon the __________ of the material.

Both A & B
Lump size
Neither A nor B
Bulk density

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Mechanical Operations
The maximum slope of a belt conveyor can be

60°
15°
30°
45°

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Mechanical Operations
Colloid mills achieve size reduction mainly by

Impact
Cutting
Attrition
Compression

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