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Mechanical Operations

Mechanical Operations
Limestone is normally crushed in a

Roll crusher
Tube mill
Ball mill
Hammer crusher

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Mechanical Operations
Activators are those chemicals which help buoying up one mineral in preference to the other in the froth floatation process. Which of the following is an activator?

Sodium carbonate
Cresylic acid
Calcium carbonate
Copper sulphate

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Mechanical Operations
The main differentiation factor between tube mill and ball mill is the

Size of the grinding media
Length to diameter ratio
Operating speed
Final product size

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Mechanical Operations
Raw materials are charged in the iron blast furnace using

None of these
Skip hoist
Screw conveyor
Bucket elevator

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Mechanical Operations
Separation of particles of various sizes, shapes and densities by allowing them to settle in a fluid is called

Classification
Thickening
Froth floatation
Clarification

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Mechanical Operations
Cartridge filters are termed as 'edge' filters, because of the fact that the

Solids are not deposited at the edge of the disk
Disks have very sharp edge
None of these
Bulk of the solids are removed at the periphery of the disks

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