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Mass Transfer

Mass Transfer
Surface renewal model of mass transfer was enunciated by

Toor and Marchello
Fick
Stefan
Danckwerts

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Mass Transfer
Moisture in a substance exerting an equilibrium vapour pressure less than that of pure liquid at the same temperature is called the __________ moisture.

Unbound
None of these
Critical
Bound

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Mass Transfer
The film penetration model of mass transfer was enunciated by

Toor and Marchello
Fick
Stefan
Gilliland

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

2
0.6
0.5
1

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Mass Transfer
The fixed cost of a distillation column at minimum reflux ratio is

Minimum
None of these
Optimum
Infinite

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Mass Transfer
Prandtl number for water at 20°C is about

7
0.7
70
150

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