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Mass Transfer

Mass Transfer
The dew point of a saturated gas phase equals the __________ temperature.

Gas
Wet bulb
Room
None of these

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Mass Transfer
In case of non-ideal gases and liquids, the molal diffusivity

Is equal to the volumetric diffusivity
Varies directly as the pressure
Is independent of pressure
Varies inversely as the pressure

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Mass Transfer
Mass transfer co-efficient 'K' according to penetration theory varies with mass dif-fusivity as

1/D
D1.5
D0.5
D

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Mass Transfer
A good solvent used for absorption should not have very high

Freezing point
Vapor pressure
Viscosity
All of these

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

Gilliland
Fick
Stefan
Toor and Marchello

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Mass Transfer
High pressure at the bottom of a distillation tower handling heat sensitive materials results in

Erosion of the tower
Increased relative volatility
Very efficient operation
Thermal decomposition of bottoms

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