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Mechanical Operations

Mechanical Operations
__________ mill is normally used for grinding of talc.

Ring-roll
Compartment
Pebble
Tube

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Mechanical Operations
For a sphere falling in the constant drag co-efficient regime, its terminal velocity depends on its diameter (d) as

D²
√d
D
1/d

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Mechanical Operations
Pick out the material having minimum Rittinger's number.

Calcite
Pyrite
Galena
Quartz

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Mechanical Operations
For separation of sugar solution from settled out mud, we use a __________ filter.

Centrifugal
Plate and frame
Rotary drum vaccum
Sparkler

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Mechanical Operations
Filter aid is used to

Increase the rate of filtration
Increase the porosity of the cake
Act as a support base for the septum
Decrease the pressure drop

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Mechanical Operations
Reciprocal of sphericity is termed as the

Specific surface ratio
Shape factor
Sauter diameter
Surface area per unit mass

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