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Mass Transfer

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

0.05
0.5
5
50

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Mass Transfer
The value of L/mG ratio for economical absorption operation ranges from

1.25 to 2.0
0.5 to 0.8
0.8 to 1.2
2.5 to 3.5

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Mass Transfer
__________ developed the film theory.

Levenspeil
Fick
Higbie
Ergun

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Mass Transfer
If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01; the humid heat in KJ/°Kg. is

0.107
0.215
0.017
0.31

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

> 1
1
< 1

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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
Liquid side
Both liquid and gas side

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