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Mass Transfer

Mass Transfer
In case of gases, the binary diffusivity is proportional to (where, P = pressure)

√P
P
1/√P
1/P

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Mass Transfer
For gas absorption, low viscosity solvents are preferred, because of their

All of these
Better flow characteristics
Low pumping pressure drop
Rapid absorption rates

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

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

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Mass Transfer
Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of

None of these
Mass diffusivity to momentum diffusivity
Momentum diffusivity to thermal diffusivity
Thermal diffusivity to mass diffusivity

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Mass Transfer
Flash distillation is suitable for the separation of components

Having very close boiling points
Having very wide boiling points
Which form minimum boiling azeotrope
Which form maximum boiling azeotrope

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Mass Transfer
The vapour pressure exerted by the moisture contained in a wet solid depends upon the

Temperature
Nature of the solid
Nature of the moisture
All of these

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