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Mass Transfer

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

Kissinevskii
Higbie
Toor and Marchello
Danckwerts

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Mass Transfer
In extractive distillation, solvent is

Of high volatility
Added to alter the relative volatility of the mixture
Of high viscosity to give high tray efficiency
Present in overhead stream

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Mass Transfer
The recovery of pencillin from the acidified fermentation broth is done by

Distillation
Liquid extraction
Absorption
Evaporation

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Mass Transfer
The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is

∞
-ve
+ve

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Mass Transfer
As per Gilliland's equation, the diffusivity is

Inversely proportional to 'P'
All of these
Dependent on the molecular volume & molecular weight of components
Directly proportional to 'T1.5'

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Mass Transfer
Gaseous diffusion co-efficient increases with increase in the

None of the listed here
Both Pressure & Temperature
Pressure
Temperature

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