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Mass Transfer

Mass Transfer
In case of liquids, the binary diffusivity is proportional to (where, T = temperature)

√T
T
T²
1/T

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Mass Transfer
Moisture in a substance exerting an equilibrium vapour pressure less than that of pure liquid at the same temperature is called the __________ moisture.

Bound
None of these
Unbound
Critical

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Mass Transfer
Desirable value of absorption factor in an absorber is

0.5
> 1
1
< 1

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Mass Transfer
The relation, Sc = Pr = 1, is valid, when the mechanism of __________ ansfer is same.

Heat and mass
Heat, momentum and mass
Mass and momentum
Heat and momentum

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Mass Transfer
Tower diameter may be decreased by

Use of increased tray spacing
Using higher reflux ratio
Increasing the vapour flow rate
Increasing the liquid flow rate

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Mass Transfer
In the desorption of highly soluble gas from the liquid, the main resistance will be in the __________ phase.

Gas
Liquid
Neither A nor B
Both A & B

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