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Mechanical Operations

Mechanical Operations
Mixing of plastic solids is generally facilitated by

Mastication
None of these
Dispersion
Kneading

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Mechanical Operations
In case of a ball mill,

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

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Mechanical Operations
Which of the follwoing mechanical conveyors does not come under the division 'scrapers'?

Drag conveyor
Ribbon conveyor
Bucket elevators
Flight conveyor

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Mechanical Operations
In filtration, the use of 'filter aid' helps in

Accelerating the rate of filtration
Reducing the filtration pressure
Deplugging the filter medium
Enhancing the cake porosity in case of a dense impermeable cake

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Mechanical Operations
Feed size of ≥ 25 cms can be accepted by

Jaw crusher
Ball mill
Fluid energy mill
Rod mill

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Mechanical Operations
Screw conveyors are

Suitable for highly abrasive materials
All of these
Suitable for sticky materials
Run at very high rpm

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