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Mass Transfer

Mass Transfer
Most important factor to be considered in the selection of packings for absorbers is the __________ of packing.

Size
Porosity
Cost
Durability

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Mass Transfer
Danckwerts developed the __________ theory.

Surface renewal
None of these
Film
Penetration

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Mass Transfer
When both the fluids flow concurrently in an absorber, the slope of the operating line is

1
- ve
-1
+ ve

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Mass Transfer
Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the __________ number.

Sherwood
Schmidt
Stanton
Peclet

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Mass Transfer
Which of the following parameters remains constant during chemical dehumidifica-tion?

Partial pressure of vapour
Wet bulb temperature
None of these
Dry bulb temperature

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Mass Transfer
The equipment used in the extraction of highly corrosive radio active liquids is

Baffle tower
Pulse column
Mixer settler
Spray column

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