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Mass Transfer

Mass Transfer
In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of

-1.5
-0.6
0.6
1.5

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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
Gas side
Liquid side
Interfacial

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Mass Transfer
In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero.

Gas phase
Liquid phase
All of these
Interface

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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

0.017
0.215
0.107
0.31

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Mass Transfer
'ADDUCTS' and 'CLATHRATES' are used in case of

None of these
Extractive distillation
Absorption
Crystallisation

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Mass Transfer
Molecular distillation is

Very low pressure distillation
High temperature distillation
Both B and C
For heat-sensitive materials

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