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Mechanical Operations

Mechanical Operations
Chance process is used for the

Concentration of iron ore
Concentration of pyrites
Cleaning of coal
Water treatment

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Mechanical Operations
Dry powdery solid materials are transported by a __________ conveyor.

None of these
Belt
Bucket
Screw

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Mechanical Operations
Maximum size reduction in a ball mill is done by the, __________ action.

Attrition
Compression
Impact
Cutting

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Mechanical Operations
Colloidal mills are used for __________ grinding.

Intermediate
Fine
Coarse
Ultrafine

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Mechanical Operations
Which of the following must be stored in silos and not in open yard?

High V.M. bituminous coal
Sand
Coke breeze
None of these

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Mechanical Operations
In a roll crusher, the specific power consumption and the production rate is affected by the

Neither A nor B
Differential roll speed
Both A & B
Reduction ratio

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