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Mass Transfer

Mass Transfer
The value of Lewis number (Le = Sc/Pr) for air-water vapour system is around

3.97
0.24
1
600

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Mass Transfer
Low viscosity absorbent is preferred for reasons of

Improved flooding characteristics
Low pressure drop on pumping
All of these
Rapid absorption rates and good heat transfer characteristics

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Mass Transfer
For a binary mixture with low relative volatility,

An azeotrope may be formed during distillation
Use high pressure distillation
Use steam distillation
Use molecular distillation

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Mass Transfer
Reverse osmosis is also called

Dialysis
Ultrafiltration
Diffusion
Electrodilysis

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Mass Transfer
In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at __________ reflux.

Operating
Maximum permissible
Minimum
Total

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Mass Transfer
The process employing desorption of the absorbed solute by a solvent is called

Elution
Osmosis
Sublimation
Reverse osmosis

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