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Mass Transfer

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

Freezing point
All of these
Viscosity
Vapor pressure

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Mass Transfer
At what percentage (by volume) of alcohol composition, it forms an azeotrope with water?

95
99
91.5
90

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Mass Transfer
Operating velocity in a packed tower is usually __________ the flooding velocity.

Equal to
More than
Twice
Half

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Mass Transfer
Which of the following is not a continuous leaching equipment?

Bollman extractor
Pachuka tank
Hydrocyclones
Kennedy extractor

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Mass Transfer
Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in

Decreased solute solubility
Large number of trays
Large minimum liquid to gas (L/G) ratio
All of these

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Mass Transfer
Danckwerts developed the __________ theory.

Film
Penetration
None of these
Surface renewal

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