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Mass Transfer

Mass Transfer
Diameter to height ratio for a rashig ring is

1
0.5
5
2

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Mass Transfer
With increase in solvent rate, the number of transfer units, NtoG, for a fixed degree of absorption from a fixed amount of gas

Decreases linearly
Increases
Decreases
Remains same

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Mass Transfer
For gas absorption, low viscosity solvents are preferred, because of their

Rapid absorption rates
Low pumping pressure drop
Better flow characteristics
All of these

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Mass Transfer
The critical moisture content in case of drying indicates the __________ rate period.

None of these
End of falling
Beginning of falling
Beginning of constant

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Mass Transfer
Relative volatility does not change appreciably with the change in

None of these
Total pressure
Temperature
Vapour pressure of either component

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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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