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Mass Transfer

Mass Transfer
Paper industry employs __________ driers.

Cylinder
Rotary
Spray
Fluidised bed

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Mass Transfer
When the temperature and humidity of air is low, we usually use __________ draft cooling tower.

Forced
None of these
Induced
Natural

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Mass Transfer
_______ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower.

Peclet
Sherwood
Stanton
Lewis

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Mass Transfer
In azeotropic mixture, the equilibrium vapour composition is

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

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

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

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