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Mass Transfer

Mass Transfer
The efficiency of a plate column will be maximum, when the flow is ideal __________ the plate.

Across
Neither A nor B
Above
Both A & B

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Mass Transfer
Rate of leaching increases with increasing

Viscosity of solvent
Pressure
Temperature
Size of the solid

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Mass Transfer
Diffusivity in concentrated solutions differs from that in dilute solutions, because of the changes in

Viscosity with concentration
Degree of ideality of the solution
Neither A nor B
Both A & B

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

Ordinary distillation
Flash vaporisation
Extractive distillation
Solvent 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
500
50
1000

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Mass Transfer
Radioactive nuclear waste is treated in

Bollman extractor
Pulsed column extractor
Rotating-disc contactor
Mixer-settler extractor

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