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Mechanical Operations

Mechanical Operations
The process opposite to 'dispersion' is termed as the

Flocculation
Filtration
None of these
Sedimentation

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Mechanical Operations
__________ are used for the separation of coarse particles from a slurry of fine particles.

Classifiers
Thickeners
Hydrocyclones
Decanters

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Mechanical Operations
Ultracentrifuges running at speeds upto 100000 rpm is normally used for the

Concentration of rubber latex
Separation of isotopes based on their density or molecular weights difference
Dewaxing of lubricating oil
Separation of cream from milk

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Mechanical Operations
Which of the following clay mixing devices is vacuum operated for deairation of clay?

Pug mill
Banbery mixer
None of these
Muller-mixer

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Mechanical Operations
Which of the following conveyors cannot be recommended for transportation of abrasive materials?

Apron conveyor
Chain conveyor
Belt conveyor
Flight conveyor

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Mechanical Operations
Activators are those chemicals which help buoying up one mineral in preference to the other in the froth floatation process. Which of the following is an activator?

Cresylic acid
Calcium carbonate
Sodium carbonate
Copper sulphate

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