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Mass Transfer

Mass Transfer
Desirable value of absorption factor in an absorber is

< 1
0.5
> 1
1

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Mass Transfer
The humid volume may be increased by increasing the

Neither A nor B
Both A & B
Humidity at constant temperature
Temperature at constant humidity

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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

9.21
0.001
100
4.605

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Mass Transfer
(NSh/NRe.NSc) is termed in mass transfer operation as the

Peclet number
Thermal diffusivity
Stanton number
Momentum diffusivity

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Mass Transfer
Packed column distillation is limited to the column __________ metres.

Neither A nor B
Height < 6
Diameter < 0.6
Both A & B

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Mass Transfer
In physical terms, Schmidt number means

Thermal diffusivity/momentum diffusivity
Thermal diffusivity/mass diffusivity
Mass diffusivity/thermal diffusivity
Momentum diffusivity/mass diffusivity

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