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Mass Transfer

Mass Transfer
__________ developed the film theory.

Ergun
Higbie
Fick
Levenspeil

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Mass Transfer
With increase in the concentration of the adsorbate, the integral heat of adsorption

May increase or decrease ; depends on the type of adsorbate
Decreases
Increases
Remains unchanged

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Mass Transfer
Physical absorption is

Both B & C
An irreversible phenomenon
A reversible phenomenon
Accompanied by evolution of heat

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Mass Transfer
During the constant rate period of drying of a solid,

None of these
Increased air humidity decreases the rate of drying
Increasing the air temperature decreases the drying rate
Surface evaporation of unbound moisture occurs

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

Pressure
Temperature
Nature of the components
None of the listed here

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Mass Transfer
Rotary dryers cannot handle __________ materials.

Sticky
Grannular
Free flowing
Dry

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