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Mass Transfer

Mass Transfer
The fixed cost of a distillation column at minimum reflux ratio is

Minimum
Infinite
None of these
Optimum

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Mass Transfer
At a fixed total pressure, humidity depends only on the

None of these
Density of the vapour
Partial pressure of vapour in the mixture
Heat capacity of the vapour

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Mass Transfer
Chemisorption (chemical adsorption) is

Characterised by adsorption of heat
A reversible phenomenon
An irreversible phenomenon
Same as "Van der Waals" adsorption

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Mass Transfer
An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is

4.605
9.21
100
0.001

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Mass Transfer
Mass transfer co-efficient of liquid is

Affected much less by temperature than that for gases
Affected more by temperature than that for gases
None of these
Not affected by the temperature

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Mass Transfer
Which of the following is not a batch drier?

Truck drier
Agitated pan drier
Vacuum shelf drier
Fluidised bed drier

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