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Mechanical Operations

Mechanical Operations
Pine oil and cresylic acid are used as __________ in the froth floatation process.

Depressor
Conditioner
Frother
Collector

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Mechanical Operations
The ratio of the actual mesh dimension of Taylor series to that of the next smaller screen is

1.5
2
√3
√2

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Mechanical Operations
Size reduction does not occur due to compression in case of

Jaw crushers
Gyratory crushers
Rod mills
Smooth roll crushers

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Mechanical Operations
Shape factor for a cylinder whose length equals its diameter is

1.5
0.5
2.0
1.0

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Mechanical Operations
Trommels employ __________ for screening of materials.

Fibrous cloth
Woven wire screen
None of these
Punched plate

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Mechanical Operations
Use of grinding aids results in the

Neither A nor B
Both A & B
Finer products
Enhanced production rate

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