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Mass Transfer

Mass Transfer
Sticky material can be dried in a __________ dryer.

Tray
Fluidised bed
None of these
Rotary

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Mass Transfer
In distillation columns, the number of bubble caps per tray primarily depends upon the

Allowable liquid velocity
Allowable gas and liquid velocities
Feed composition
Allowable gas velocity

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Mass Transfer
In a counter-current extractor, as the axial mixing increases, the extraction efficiency

Depends on the pressure of the system
Increases
Remains unchanged
Decreases

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Mass Transfer
Radioactive nuclear waste is treated in

Rotating-disc contactor
Bollman extractor
Pulsed column extractor
Mixer-settler extractor

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Mass Transfer
The percentage humidity is less than the relative humidity only at __________ percent humidity.

None of these
Hundred
Both zero and hundred
Zero

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Mass Transfer
Moisture in a solid exerting an equilibrium vapour pressure equal to that of the pure liquid at the same temperature is called the __________ moisture.

Bound
Free
Unbound
Critical

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