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Mass Transfer

Mass Transfer
Selectivity of the solvent used in solvent extraction should be

1
> 1
< 1

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Mass Transfer
In a packed tower, the value of HETP equals HTUOG, when the equilibrium and the operating lines are (where, HETP = height equivalant to a theoretical plate HTUOG = overall gas phase height of a transfer unit)

Neither A nor B
Straight
Both A & B
Parallel

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Mass Transfer
Smoke is an example of

Solid dispersed in liquid
Liquid dispersed in gas
Solid dispersed in gas
Gas dispersed in liquid

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Mass Transfer
The Kundsen diffusivity is proportional to (where, T = absolute temperature)

T
√T
T⁴
T²

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Mass Transfer
On addition of solute in the solvent, the __________ of the solution decreases.

Both B and C
Freezing point
Vapour pressure
Boiling point

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Mass Transfer
With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible.

Decreases
Remains same
Increases
Increases linearly

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