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Mass Transfer

Mass Transfer
Weight of 1 m³ of humid air as compared to 1 m³ of dry air, under the same conditions, is

More
Less
Same
Unpredictable

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Mass Transfer
Which of the following unit operations makes use of Thiele-Geddes equation?

Liquid-liquid extraction
Solid-liquid extraction
Multicomponent distillation
Multicomponent absorption with chemical reaction

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Mass Transfer
Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid )

P >>P
P
P < P
P = P

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Mass Transfer
The equipment frequently used for adiabatic humidification-cooling operation with recirculating liquid is

Natural draft cooling tower
Induced draft cooling tower
Spray chamber
None of these

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Mass Transfer
Which of the following gas-liquid contacting devices incurs the least pressure drop for a particular duty?

Bubble cap tower
Perforated tray tower
Wetted wall tower
Grid tray tower

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Mass Transfer
Reverse osmosis is also called

Ultrafiltration
Dialysis
Electrodilysis
Diffusion

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