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Mass Transfer

Mass Transfer
Paper industry employs __________ driers.

Fluidised bed
Cylinder
Rotary
Spray

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Mass Transfer
Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is called the __________ temperature.

Dry-bulb
Dew point
Wet-bulb
Adiabatic saturation

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Mass Transfer
Stacked packing compared to dumped packing

Provides poorer contact between the fluids
Both A & B
Gives higher pressure drop
Gives lower pressure drop

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Mass Transfer
The film penetration model of mass transfer was enunciated by

Gilliland
Stefan
Toor and Marchello
Fick

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Mass Transfer
The minimum number of theoretical plates is required for achieving a given separation in distillation column with

Total reflux
No reflux
Zero reflux ratio
Minimum reflux ratio

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Mass Transfer
Critical humidity of a solid salt means the humidity

Above Which it will always become dry and below which it will always stay damp
Below which it will always stay dry
Above which it will always become damp
Both A and B

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