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Mass Transfer

Mass Transfer
Boiling point diagram is not affected by the ambient

Humidity
Pressure
Temperature
Both B and C

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Mass Transfer
The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will

Increase
Decrease
Depend on saturated boiling point; may increase or decrease
Remains same

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Mass Transfer
During sensible cooling process

Relative humidity decreases
Both B and C
Relative humidity increases
Wet bulb temperature decreases

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Mass Transfer
Desirable value of absorption factor in an absorber is

0.5
< 1
> 1
1

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Mass Transfer
For the case of flow of air past a wet bulb thermometer (air water vapour system), the approximate value of Hâ‚‚/ky.Cz is around

1
0.6
0.24
0.72

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Mass Transfer
Moisture content of a substance when at equilibrium with a given partial pressure of the vapour is called the __________ moisture.

Unbound
Bound
Free
Equilibrium

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