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Mass Transfer

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

0.05
50
5
0.5

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

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

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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 ?

Both liquid and gas side
Liquid side
Gas side
Interfacial

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Mass Transfer
With increase in pressure, the relative volatility for a binary system

Decreases
Either A or B, depends on the system
Increases
Remains same

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Mass Transfer
Which of the following is the most suitable for extraction in a system having very low density difference?

Mixer-settler extractor
Pulsed extractor
Packed extraction tower
Centrifugal extractor

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Mass Transfer
The ratio of Murphree plate efficiency to point efficiency is 1 in a __________ flow model.

Plug
Perfectly mixed
Both plug & perfectly mixed
None of the listed here

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