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Mechanical Operations

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

Tube
Pebble
Ring-roll
Compartment

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Mechanical Operations
Dispersion of a gas through liquid is done by using a

Masticator
None of these
Kneader
Sparger

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Mechanical Operations
For the preliminary breaking of hard rock, we use a

Tube mill
Ball mill
Squirrel-cage disintegrator
Gyratory crusher

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Mechanical Operations
Temperature of the product during ultrafine grinding

Remains constant
Increases
Decreases
May increase or decrease ; depends on the material being ground

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Mechanical Operations
In a mixer, the quantity, (v. L/D) is termed as __________ number(where, v = longitudinal velocity of material, L = length of the mixer, D = diffusivity in axial mixing).

Peclet
Weber
Schmidt
Brinkman

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Mechanical Operations
Equivalent diameter of a particle is the diameter of the sphere having the same

Ratio of surface to volume as the actual volume
None of these
Ratio of volume to surface as the particle
Volume as the particle

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