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Mechanical Operations

Mechanical Operations
Cement clinker is reduced to fine size by a

Roll crusher
Hammer mill
Tube mill
Ball mill

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Mechanical Operations
There is practically no alternative/competitor to __________ in the beneficiation treatment of sulphide ores.

Jigging
Froth floatation
Classification
Tabling

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Mechanical Operations
The sphericity of a cylinder of 1 mm diameter and length 3 mm is

0.9
0.6
0.78
0.5

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Mechanical Operations
Coal is finally pulverised to 200 mesh size for burning in boilers by a

Ball mill
Hammer crusher
Roll crusher
Gyratory crusher

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

√(AD/V)
AD/V
D/V
A/V

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Mechanical Operations
Which of the following is not a wet classifier?

Dorr Oliver rake classifier
Hydrocyclones
None of these
Sharpies supercentrifuge

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