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Mass Transfer

Mass Transfer
When both the fluids flow concurrently in an absorber, the slope of the operating line is

- ve
1
-1
+ ve

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Mass Transfer
According to Chilton-Colburn analogy for mass transfer, NSt.NSc2/3 is equal to

F
F/2
2f
1/f

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Mass Transfer
In case of non-ideal gases and liquids, the molal diffusivity

Varies directly as the pressure
Is equal to the volumetric diffusivity
Varies inversely as the pressure
Is independent of pressure

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Mass Transfer
Extraction of pencillin employs a __________ extraction coloumn.

Plate
Centrifugal
Packed
None of these

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Mass Transfer
In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is

Called integral heat of adsorption
Equal to the heat of wetting
Equal to the heat of formation of surface compound
Zero

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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
Interfacial
Gas side
Liquid side

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