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Mechanical Operations

Mechanical Operations
Pick out the material having minimum Rittinger's number.

Galena
Pyrite
Calcite
Quartz

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Mechanical Operations
Separation of materials into products based on the difference of their sizes is called

Flocculation
Sizing
Classification
Sorting

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Mechanical Operations
To get ultrafine particles, the equipment used is a

Fluid energy mill
Ball mill
Rod mill
Hammer crusher

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Mechanical Operations
The constants (Kb, Kr and Kk) used in the laws of crushing (i.e., Bond's law, Rittinger's law and Kick's law) depend upon the

Both A & B
Type of crushing machine
Feed material
Neither A nor B

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Mechanical Operations
Dust collection efficiency of electrostatic precipitator can be as high as 99.9%. Maximum temperature and pressure of dust laden gas that can be cleaned in an electrostatic precipitator is respectively.

1000°C and 10 atm
200°C and 5 atm
1000°C and 500 atm
500°C and 50 atm

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Mechanical Operations
Carbon black is pulverised in a

Hammer crusher
Gyratory crusher
Roll crusher
Ball mill

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