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Mass Transfer

Mass Transfer
Most important factor to be considered in the selection of packings for absorbers is the __________ of packing.

Size
Durability
Porosity
Cost

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Mass Transfer
The humid volume may be increased by increasing the

Temperature at constant humidity
Humidity at constant temperature
Neither A nor B
Both A & B

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Mass Transfer
Extraction of coffee from its seed is done by

Extractive distillation
Leaching
Steam distillation
Liquid-liquid extraction

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

1
600
3.97
0.24

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Mass Transfer
__________ equation applies to diffusivities in liquids.

Hirschfelder
Gilliland
None of these
Wilke and Chang

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Mass Transfer
Extraction of pencillin employs a __________ extraction coloumn.

Packed
None of these
Centrifugal
Plate

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