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Mass Transfer

Mass Transfer
The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is

-ve
∞
+ve

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Mass Transfer
Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin/yout).For 98% recovery of acetone, the number of trays required is/are

10
1
8
9

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Mass Transfer
______ extractor uses centrifugal force for separating the two phases.

Podbielniak
None of the listed here
Schiebel
Treybal

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Mass Transfer
The wet and 'dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be __________ °C.

< 25
25
> 25
-25

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Mass Transfer
The operation involved when the soluble material is largely on the surface of an insoluble solid and is merely washed off by the solvent is called

Elutriation or elution
Percolation
None of these
Decoction

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Mass Transfer
The film penetration model of mass transfer was enunciated by

Gilliland
Stefan
Fick
Toor and Marchello

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