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Mass Transfer

Mass Transfer
The binary diffusivity in gases and liquids vary respectively as

T and T3/2
√T and T3/2
T3/2 and √T
T3/2 and T

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Mass Transfer
The rate of mass transfer is not dependent upon the

Degree of dispersion of one fluid in the other
Interfacial surface exposed between the phases
Both A & B
None of these

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Mass Transfer
The operating cost of a distillation column at minimum reflux ratio is

Zero
Infinite
Maximum
Minimum

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Mass Transfer
Molecular diffusivity of a liquid

May increase or decrease with temperature
Is independent of temperature
Increases with temperature
Decreases with temperature

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Mass Transfer
At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower.

Is same as
Cannot be predicted as data are insufficient
Is lower than
Is greater than

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Mass Transfer
In triangular co-ordinates, the ternery composition point falls __________ of the triangle.

None of these
On the sides
Inside
In the corners

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