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

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Mass Transfer
Positive deviation from Raoult's law means a mixture whose total pressure is

None of these
Less than that computed for ideality
Less than the sum of the vapour pressure of the components
Greater than that computed for ideality

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Mass Transfer
Humidification involves mass transfer between a pure liquid phase and a fixed gas, which is

Insoluble in the liquid
At a fixed temperature
Non-ideal in nature
Soluble in the liquid

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Mass Transfer
Wetted wall tower experiment determines the

Molal diffusivity
None of these
Volumetric co-efficient
Mass transfer co-efficient

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Mass Transfer
With increase in temperature, the mutual solubility of two liquids

Increases
Decreases exponentially
Decreases
Remains unchanged

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Mass Transfer
A minimum boiling azeotrope is exemplified by

Water-isobutyl alcohol
Toluene-benzene
None of these
Acetone-carbon disulphide

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