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Mass Transfer

Mass Transfer
According to Poiseuille's law, the permeability for gas flow through a capillary is proportional to (where, μ = gas viscosity)

√μ
μ²
1/μ
μ

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Mass Transfer
Nitrobenzene (boiling point = 210.6°C) is steam distilled at 1 atm pressure.Nitrobenzene will distill off __________ °C.

At < 100
None of the listed here
At > 210.6
Between 100 and 210

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

Absorption
None of these
Distillation
Solvent extraction

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Mass Transfer
Which of the following binary systems is an example of a maximum boiling azeotrope?

Water-hydrochloric acid
None of the listed here
Acetone-carbon disulphide
Water-ethyl alcohol

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Mass Transfer
Drift in a cooling tower is

All of these
Desirable
The water entrained by the circulating air
Dependent on the water lost by evaporation

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Mass Transfer
Stacked packing compared to dumped packing

Gives higher pressure drop
Both A & B
Provides poorer contact between the fluids
Gives lower pressure drop

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