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Mass Transfer

Mass Transfer
__________ column is used in gas absorption process.

Seive/perforated tray
Bubble cap
Wetted wall
Packed

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Mass Transfer
Sodium bicarbonate is produced during soda ash manufacture using a __________ tower.

None of these
Plate
Baffle
Packed

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Mass Transfer
__________ developed the film theory.

Levenspeil
Fick
Ergun
Higbie

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Mass Transfer
In a counter-current extractor, as the axial mixing increases, the extraction efficiency

Decreases
Depends on the pressure of the system
Remains unchanged
Increases

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Mass Transfer
When an unsaturated air-water mixture is heated at constant pressure, then

The partial pressure of water vapour increases
The relative humidity decreases
The specific humidity decreases
The relative humidity increases

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Mass Transfer
Unit of molal diffusivity is

Gm moles/cm² . sec
Cm²/sec gm . mole
Gm moles/cm². sec
Gm moles/cm. sec

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