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Mass Transfer

Mass Transfer
Stefan's law describes the mass transfer by

Both A & B
Neither A nor B
Diffusion
Bulk flow

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Mass Transfer
Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in __________ tower.

Wetted wall
Packed
Bubble cap
Perforated tray

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Mass Transfer
__________ equation applies to diffusivities in liquids.

None of these
Wilke and Chang
Gilliland
Hirschfelder

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Mass Transfer
Sides of equilateral-triangular co-ordinates (on which ternary liquid system is plotted) represent

A binary mixture
Partially miscible ternary system
A ternary mixture
A pure component

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Mass Transfer
Drying operation under vacuum is carried out to

Dry those materials which have very high unbound mositure content
Reduce drying temperature
Dry materials having high bound moisture content
Increase drying temperature

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Mass Transfer
Absorption accompanied by heat evolution results in

Increased capacity of the absorber
None of these
Decrease in equilibrium solubility
Increase in equilibrium solubility

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