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Mass Transfer

Mass Transfer
At the boiling point of the liquid at the prevailing pressure, the saturated absolute humidity becomes

?
None of these
1

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Mass Transfer
Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be

Dehumidified
Cooled
Humidified
Both A & B

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Mass Transfer
Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as

K ∝ D1.5
K ∝ D2
K ∝ √D
K ∝ D

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Mass Transfer
Which of the following unit operations makes use of Thiele-Geddes equation?

Multicomponent absorption with chemical reaction
Multicomponent distillation
Solid-liquid extraction
Liquid-liquid extraction

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Mass Transfer
Acetic acid will be most economically separated from a dilute solution of acetic acid in water by

Solvent extraction
Continuous distillation
Evaporation
Absorption

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Mass Transfer
If mass diffusivity in a mixture is equal to the thermal diffusivity, then the Lewis number is

< 1
> 1
1

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