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Mass Transfer

Mass Transfer
If moisture content of solid on dry basis is X, then the same on wet basis is

X/(X - 1)
X/(X + 1)
(X - 1)/X
(X + 1)/X

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Mass Transfer
If the path of liquid across the plate is very long as in case of large diameter tower, Murphree efficiency can be __________ percent.

> 100
< 100
100
None of these

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Mass Transfer
A minimum boiling azeotrope is exemplified by

Acetone-carbon disulphide
None of these
Toluene-benzene
Water-isobutyl alcohol

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Mass Transfer
The diffusivity (D) in a binary gas mixture is related to the pressure (P) as

D ∝ P0.5
D ∝ 1/P
D ∝ 1/P1.5
D ∝ 1/P0.5

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Mass Transfer
For a binary mixture distillation process, the degree of freedom is 2. However, if the pressure is fixed in this process, the number of independent variables in this process will be

1
2
3

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Mass Transfer
Fenske equation determines the

Minimum number of theoretical plates
Height of the distillation column
Optimum reflux ratio
Maximum number of ideal plates

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