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Mass Transfer

Mass Transfer
Stefan's law describes the mass transfer by

Diffusion
Both A & B
Neither A nor B
Bulk flow

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Mass Transfer
In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.

Smaller than
Equal to
Either A, or B ; depends on the type of packing
Greater than

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Mass Transfer
Minimum reflux ratio in a distillation column results in

Optimum number of trays
Maximum condenser size
Minimum reboiler size
Minimum number of trays

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Mass Transfer
For contacting a highly soluble gas with a liquid

Spray the liquid on gas stream
Bubble the gas through liquid
None of the listed here
Both of the options given here

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Mass Transfer
The binary diffusivity in gases does not depend upon the

Pressure
None of the listed here
Temperature
Nature of the components

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Mass Transfer
With increase in pressure, the relative volatility for a binary system

Decreases
Either A or B, depends on the system
Increases
Remains same

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