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Mass Transfer

Mass Transfer
Lewis number (Le) is

St x Sh
Sh x Pr
Pr x St
Sc x Pr

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Mass Transfer
At a fixed total pressure, humidity depends only on the

Heat capacity of the vapour
None of these
Density of the vapour
Partial pressure of vapour in the mixture

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Mass Transfer
The relative humidity of air decreases in-spite of an increase in the absolute humidity, when the

Pressure falls
Temperature rises
Pressure rises
Temperature falls

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Mass Transfer
__________ equation applies to diffusivities in liquids.

Hirschfelder
Gilliland
Wilke and Chang
None of these

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Mass Transfer
______ is the separation technique used for desalination of sea water.

Thermal diffusion
Adsorption
Absorption
Reverse osmosis

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Mass Transfer
The film penetration model of mass transfer was enunciated by

Fick
Gilliland
Stefan
Toor and Marchello

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