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Mechanical Operations

Mechanical Operations
Use of baffles in agitators help in minimising the __________ tendency.

Swirling
Both A & B
Vortexing
Neither A nor B

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Mechanical Operations
The main size reduction operation in ultrafine grinders is

Impact
Compression
Attrition
Cutting

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Mechanical Operations
In a ball mill, the volume occupied by the balls (when the mill is stopped) is about __________ percent of the volume of the mill.

85
50
70
35

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

Muller-mixer
Pug mill
Banbery mixer
None of these

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Mechanical Operations
Sauter mean diameter is the same as the __________ mean diameter.

Mass
Arithmetic
Volume-surface
Geometric

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Mechanical Operations
Cyclones are used primarily for separating

Solids from solids
Solids
Liquids
Solids from fluids

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