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Mass Transfer

Mass Transfer
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

> 1
≤ 1
1
< 1

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Mass Transfer
_______ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower.

Peclet
Lewis
Sherwood
Stanton

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Mass Transfer
'ADDUCTS' and 'CLATHRATES' are used in case of

Extractive distillation
Crystallisation
None of these
Absorption

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Mass Transfer
The diffusivity (D) in a binary gas mixture is related to the pressure (P) as

D ∝ P0.5
D ∝ 1/P0.5
D ∝ 1/P
D ∝ 1/P1.5

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Mass Transfer
In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero.

Gas phase
All of these
Interface
Liquid phase

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Mass Transfer
Relative volatility does not change appreciably with the change in

None of these
Vapour pressure of either component
Temperature
Total pressure

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