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Mass Transfer

Mass Transfer
A good solvent used for absorption should not have very high

Vapor pressure
Viscosity
Freezing point
All of these

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Mass Transfer
In azeotropic mixture, the equilibrium vapour composition is

Less than liquid composition
None of the listed here
Same as liquid composition
More than liquid composition

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Mass Transfer
Minimum possible diameter of a packed coloumn is decided mainly by the

Liquid hold up
Gas viscosity
Liquid density
Flooding

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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

1
9
8
10

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

Podbielniak
Schiebel
Treybal
None of the listed here

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Mass Transfer
According to the Fenske equation, what will be the minimum number of plates required in a distillation column to separate an equimolar binary mixture of components A and B into an overhead fraction containing 99 mol% A and a bottom fraction containing 98 mol% B? Assume that relative volatility (αAB = 2) does not change appreciably in the coloumn.

12
10
6
8

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