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Mass Transfer

Mass Transfer
In liquid-liquid extraction, the number of phases at plait point is

3
4
1
2

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Mass Transfer
Ordinary diffusion process is also called __________ diffusion.

Thermal
Pressure
Concentration
Forced

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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
Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) as

K ∝ D1.5
K ∝ D2
K ∝ √D
K ∝ D

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Mass Transfer
Fractional solvent extraction

None of the listed here
Results in low interfacial tension
Employs only one solvent
Employs two solvents

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Mass Transfer
On moving the feed line (q-line) from saturated liquid feed (vertical position) to saturated vapor feed (horizontal feed), if the slope of both the operating lines are to be increased, then it will result in

Greater degree of separation with a fixed number of trays
Increased reflux ratio
None of these
Increased reboiler load

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