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Mass Transfer

Mass Transfer
Danckwerts developed the __________ theory.

Film
Penetration
None of these
Surface renewal

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Mass Transfer
Humidification involves mass transfer between a pure liquid phase and a fixed gas, which is

Soluble in the liquid
Insoluble in the liquid
Non-ideal in nature
At a fixed temperature

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Mass Transfer
The relative volatility of a binary mixture at the azeotropic composition is

∞
1
> 1

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

Toor and Marchello
Fick
Gilliland
Stefan

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Mass Transfer
The unit of volumetric diffusivity is

Cm²/seC₂
Cm²/sec
Cm/sec
Cm³/sec

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Mass Transfer
Weeping in a distillation column

Results due to very low gas velocity
Provides large interfacial surface for mass transfer
Increases tray efficiency
Results due to very high gas velocity

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