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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
Schimdt number and Lewis number for pure air at atmospheric conditions are respectively

>1 and ≈ 1
0 and ≈ 1
< 1 and ≈ 1
1 and 0

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Mass Transfer
In McCabe-Thiele method, at infinite reflux ratio

Both A & B
The overhead product is minimum
Neither A nor B
Both the operating lines coincide with diagonal

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Mass Transfer
Penetration model (theory) for mass transfer was enunciated by

Danckwerts
Higbie
Toor and Marchello
Kissinevskii

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Mass Transfer
Mass transfer co-efficient is defined as

Flux = Co-efficient/concentration difference
Co-efficient = Flux/concentration difference
None of the listed here
Flux=concentration difference/co-effi-cient

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Mass Transfer
Separation of a mixture of two gases by absorption in the liquid solvent depends upon the difference in their

Solubility
Relative volatility
Density
Viscosity

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