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Mechanical Operations

Mechanical Operations
Size measurement of ultrafine particles can be best expressed in terms of

Surface area per unit mass
Centimetre
Screen size
Micron

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Mechanical Operations
Fibrous material is broken by a

Tube mill
Squirrel-cage disintegrator
Rollcrusher
Ball mill

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

Tube
Compartment
Ring-roll
Pebble

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Mechanical Operations
__________ centrifuge is normally used in sugar mills.

Perforated horizontal basket continuous
Disc-bowl
Suspended batch basket
Tubular bowl

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Mechanical Operations
For spheres, the specific surface shape factor is given by

√(AD/V)
D/V
AD/V
A/V

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Mechanical Operations
Trommels employ __________ for screening of materials.

None of these
Punched plate
Fibrous cloth
Woven wire screen

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