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Mass Transfer

Mass Transfer
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

1
≤ 1
> 1
< 1

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Mass Transfer
The value of Lewis number (Le = Sc/Pr) for air-water vapour system is around

0.24
3.97
1
600

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Mass Transfer
Rayleigh's equation applies to __________ distillation.

Steam
Continuous
Differential
Flash

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Mass Transfer
Extraction of coffee from its seed is done by

Extractive distillation
Steam distillation
Leaching
Liquid-liquid extraction

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Mass Transfer
The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m²/m³)

100
50
500
1000

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Mass Transfer
Moisture content of a substance when at equilibrium with a given partial pressure of the vapour is called the __________ moisture.

Free
Equilibrium
Unbound
Bound

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