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Mass Transfer

Mass Transfer
In case of gases, the binary diffusivity is proportional to (where, P = pressure)

P
1/√P
√P
1/P

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Mass Transfer
The individual mass transfer co-efficients (moles/m² . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ?

Interfacial
Gas side
Both liquid and gas side
Liquid side

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Mass Transfer
At constant pressure, with increase of temperature, the dew point will

Remain unchanged
Decrease
Increase
Increase/decrease ; depends on the temperature

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Mass Transfer
Water-ethyl alcohal solution can be concentrated (in respect of alcohal concentration) by __________ distillation.

Vacuum
High pressure
None of these
Atmospheric

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Mass Transfer
On addition of solute in the solvent, the __________ of the solution decreases.

Freezing point
Both B and C
Vapour pressure
Boiling point

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Mass Transfer
Which of the following is not a continuous leaching equipment?

Bollman extractor
Hydrocyclones
Pachuka tank
Kennedy extractor

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