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Mass Transfer

Mass Transfer
In case of gases, the binary diffusivity is proportional to (where, P = pressure)

√P
1/√P
P
1/P

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Mass Transfer
The caking of crystals can be prevented by

Coating the product with inert material
Maintaining high critical humidity
Both A and C
Maintaining low critical humidity

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Mass Transfer
The cooling effect in a cooling tower can be speeded up by

All of the listed here
Increasing the air velocity and area of exposed wet surface
Reducing the barometric pressure
Reducing the humidity of the air

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Mass Transfer
For a single component absorber, the operating line is straight only when plotted in term of __________ units.

Mole fraction
None of these
Partial pressure
Mole ratio

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Mass Transfer
A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height.

30-40
44119
90-100
70-80

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Mass Transfer
Water-ethyl alcohal solution can be concentrated (in respect of alcohal concentration) by __________ distillation.

Atmospheric
None of these
High pressure
Vacuum

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