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Mass Transfer

Mass Transfer
During drying operation, it is easier to remove the __________ moisture.

Equilibrium
Unbound
Critical
Bound

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Mass Transfer
The rough value of diffusion co-efficient of water vapor into air at 25°C may be about __________ cm²/sec.

2.5
0.25
0.0025
1.25

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Mass Transfer
Molecular seives are regenerated by heating to __________ °C.

> 1000
< 150
> 500
200-330

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Mass Transfer
For the flow of gases through a capillary, with increase in temperature, the permeability __________ as per Knudsen law.

Decreases
Either A or B; depends on the gas
Remains same
Increases

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

Stefan
Toor and Marchello
Gilliland
Fick

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Mass Transfer
The solvent used in liquid-liquid extraction should have __________ less than one.

Distribution co-efficient
Neither A nor B
Both A & B
Selectivity

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