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Mass Transfer

Mass Transfer
In a solution containing 0.30 Kg mole of solute and 600 kg of solvent, the molality is

0.5
0.6
1
2

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Mass Transfer
Mass transfer co-efficient is directly proportional to DAB according to the __________ theory.

Penetration
None of these
Surface-renewal
Film

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

Evaporation
Drift
Blowdown and leakage
All of these

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Mass Transfer
Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of

Momentum diffusivity to thermal diffusivity
None of these
Mass diffusivity to momentum diffusivity
Thermal diffusivity to mass diffusivity

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Mass Transfer
For a distillation column operating at minimum reflux, the

None of these
Reflux ratio will be maximum
Concentration of liquid and vapour leaving a plate will be same
Number of plates required will be maximum

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Mass Transfer
Degree of freedom for leaching and solvent extraction process is

3
2
1

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