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Mass Transfer

Mass Transfer
If f = moles of vapour present per mole of feed, then the slope of feed line is

- 1/f
(1 - f)/f
- f/(1 - f)
- (f - 1)/f

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Mass Transfer
The change in enthalpy, when a unit quantity of gas is absorbed by relatively large quantity of adsorbent (on which a definite concentration of the adsorbed gas already exists) is termed as the

None of these
Heat of wetting
Integral heat of adsorption
Differential heat of adsorption

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Mass Transfer
A binary mixture of benzene and cyclohexane is separated by

Flash vaporisation
Ordinary distillation
Extractive distillation
Solvent extraction

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Mass Transfer
Reverse osmosis is also called

Diffusion
Ultrafiltration
Electrodilysis
Dialysis

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Mass Transfer
When the __________ the relative humidity of air decreases, despite an increase in the absolute humidity.

Temperature rises
Pressure falls
Temperature falls
Pressure rises

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Mass Transfer
Low viscosity absorbent is preferred for reasons of

Improved flooding characteristics
Low pressure drop on pumping
All of these
Rapid absorption rates and good heat transfer characteristics

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