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Mass Transfer

Mass Transfer
Selectivity of the solvent used in solvent extraction should be

< 1
> 1
1

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Mass Transfer
Pore size of the molecular seive 5A is __________ mm.

0.5
5
50
0.05

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Mass Transfer
Nitrobenzene (boiling point = 210.6°C) is steam distilled at 1 atm pressure.Nitrobenzene will distill off __________ °C.

At < 100
None of the listed here
Between 100 and 210
At > 210.6

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Mass Transfer
Gaseous diffusion co-efficient increases with increase in the

Pressure
Temperature
Both Pressure & Temperature
None of the listed here

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Mass Transfer
Absorption factor method is used to calculate the number of ideal stages, when

Operating line lies above the equilibrium line
Operating line lies below the equilibrium line
Both operating and equilibrium lines are parallel
Pressure drop in the column is very high

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Mass Transfer
For __________ drying, the effects of velocity, temperature and humidity of the gas and the thickness of the solid are the same.

Constant rate
Neither A nor B
Both A & B
Unsaturated surface

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