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Mass Transfer

Mass Transfer
Danckwerts developed the __________ theory.

None of these
Penetration
Surface renewal
Film

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Mass Transfer
The cooling effect in a cooling tower can be speeded up by

Increasing the air velocity and area of exposed wet surface
Reducing the humidity of the air
All of the listed here
Reducing the barometric pressure

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Mass Transfer
Deairation (removal of O₂) of water is done by

Rectification
Ion-exchange
Adsorption
Absorption

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Mass Transfer
__________ temperature is the steady state temperature attained by a small amount of liquid evaporating into a large quantity of unsaturated gas-vapor mixture.

Dew point
None of these
Dry bulb
Wet bulb

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Mass Transfer
During sensible cooling process

Wet bulb temperature decreases
Relative humidity decreases
Relative humidity increases
Both B and C

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Mass Transfer
Which one of the following devices is not used for both the absorption as well as the liquid-liquid extraction processes?

Packed towers
Wetted wall columns
Spray towers
Plate towers

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