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Mass Transfer

Mass Transfer
Boiling point diagram is not affected by the ambient

Humidity
Both B and C
Temperature
Pressure

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Mass Transfer
At a fixed total pressure, humidity depends only on the

Heat capacity of the vapour
Density of the vapour
Partial pressure of vapour in the mixture
None of these

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Mass Transfer
Steady state equimolal counter diffusion is encountered in

Absorption of NH₃ from air by water
Separation of a binary mixture by distillation
All of these
All liquid-liquid diffusion systems

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Mass Transfer
Make up water is required in a cooling tower to replace the water lost by

Drift
All of these
Evaporation
Blowdown and leakage

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Mass Transfer
The process employing desorption of the absorbed solute by a solvent is called

Osmosis
Reverse osmosis
Elution
Sublimation

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Mass Transfer
1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is

0.4
0.2
0.25
0.175

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