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Mass Transfer

Mass Transfer
Sand is dried in foundaries in a___drier.

Vacuum
Spray
Fluidisedbed
Rotary

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Mass Transfer
With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature)

Remains unchanged
Decreases linearly
Increases
Decreases

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Mass Transfer
Dorr thickener is an equipment used for

Sedimentation
Clarification
Classification
Leaching

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Mass Transfer
The value of Lewis number (Le = Sc/Pr) for air-water vapour system is around

600
0.24
3.97
1

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Mass Transfer
Extraction of coffee from its seed is done by

Liquid-liquid extraction
Steam distillation
Leaching
Extractive distillation

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Mass Transfer
Percentage saturation is __________ the relative saturation.

Always smaller than
None of these
Not related to
Always greater than

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