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Mass Transfer

Mass Transfer
Reverse osmosis is also called

Diffusion
Dialysis
Electrodilysis
Ultrafiltration

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Mass Transfer
__________ is concerned with the adsorption equilibria.

None of these
Freundlich equation
Fick's law
Gibb's equation

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Mass Transfer
In paper industry, paper is dried in a __________ dryer.

Conveyor
Heated cylinder
Tunnel
Festoon

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Mass Transfer
Steady state equimolal counter diffusion is encountered in

All of these
Absorption of NH₃ from air by water
Separation of a binary mixture by distillation
All liquid-liquid diffusion systems

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Mass Transfer
In case of liquids, the binary diffusivity is proportional to (where, T = temperature)

T²
T
√T
1/T

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Mass Transfer
It takes 6 hours to dry a wet solid from 50% moisture content to the critical moisture content of 15%. How much longer it will take to dry the solid to 10% moisture content, under the same drying conditions? (The equilibrium moisture content of the solid is 5%).

15 min
51 min
94 min
71 min

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