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Mass Transfer

Mass Transfer
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

1
> 1
< 1
≤ 1

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Mass Transfer
NSc/NPr is called the

Sherwood number
Psychrometric ratio
Lewis number
Stantan number

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Mass Transfer
In case of an ideal solution, the total vapor pressure varies __________ with the composition expressed as mole fraction,

Inversely
None of these
Exponentially
Linearly

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Mass Transfer
For a distillation column operating at minimum reflux, the

Concentration of liquid and vapour leaving a plate will be same
Reflux ratio will be maximum
None of these
Number of plates required will be maximum

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Mass Transfer
In which of the following unit operations, the selectivity is an important parameter?

Distillation
Solvent extraction
Absorption
None of these

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Mass Transfer
Penetration model (theory) for mass transfer was enunciated by

Kissinevskii
Toor and Marchello
Higbie
Danckwerts

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