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Mass Transfer

Mass Transfer
Sand is dried in foundaries in a___drier.

Fluidisedbed
Rotary
Spray
Vacuum

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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

0.001
9.21
100
4.605

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Mass Transfer
Positive deviation from Raoult's law means a mixture whose total pressure is

None of these
Less than the sum of the vapour pressure of the components
Less than that computed for ideality
Greater than that computed for ideality

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Mass Transfer
Drift in a cooling tower is

The water entrained by the circulating air
All of these
Desirable
Dependent on the water lost by evaporation

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Mass Transfer
The reciprocal of stripping factor is termed as

Absorption factor
Relative volatility
Selectivity index
Murphree efficiency

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Mass Transfer
Flooding in a column results due to

High temperature
High pressure drop
Low pressure drop
Low velocity of the liquid

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