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Mass Transfer

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

√P
P
1/√P
1/P

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Mass Transfer
Design calculation for multiple component distillation is done by

Tray to tray calculations
Ponchon-Savarit method
Mccabe-Thiele method
Enthalpy concentration method

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Mass Transfer
Reverse osmosis is also called

Dialysis
Diffusion
Ultrafiltration
Electrodilysis

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Mass Transfer
Cox chart is useful in the design of

Distillation column
Evaporator
Crystalliser
Dryer

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Mass Transfer
The binary diffusivity in gases at atmospheric conditions is about

10-1 cm²/sec
10-9 cm/sec
10-3 sec/cm
10-4 cm²/seC₂

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Mass Transfer
The humid volume may be increased by increasing the

Humidity at constant temperature
Temperature at constant humidity
Neither A nor B
Both A & B

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