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Mechanical Operations

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

Squirrel-cage disintegrator
Gyratory crusher
Tube mill
Ball mill

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Mechanical Operations
Two particles are called to be equal settling, if they are having the same.

None of these
Specific gravity
Terminal velocities in the same fluid & in the same field of force
Size

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Mechanical Operations
In case of a ball mill,

None of these
Operating speed should be more than the critical speed
Fine feed requires a larger ball
Coarse feed requires a larger ball

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Mechanical Operations
Which of the following is not a part of the Blake jaw crusher?

Pitman
Check plates
Hanger
Toggles

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Mechanical Operations
The most suitable equipment used to devulcanise rubber scrap and to make water dispersion & rubber solution is a

None of these
Sharpies centrifuge
Propeller agitator
Boundary mixer

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Mechanical Operations
Pine oil used in froth floatation technique acts as a/an

Modifier
Frother
Activator
Collector

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