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Mass Transfer

Mass Transfer
Penetration model (theory) for mass transfer was enunciated by

Toor and Marchello
Higbie
Kissinevskii
Danckwerts

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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)

Decreases linearly
Increases
Decreases
Remains unchanged

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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/P1.5
D ∝ 1/P

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Mass Transfer
With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system)

Increases Linearly
Remains unaffected
Decreases
Increases

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Mass Transfer
Removal of __________ exemplifies an adsorption unit operation.

None of the listed here
Water from petrol
Ammonia from coke oven gas
Uranium from its ore

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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
Remains unchanged
Decreases
Increases

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MORE MCQ ON Mass Transfer

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