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Mass Transfer

Mass Transfer
If f is defined as above, then which of the following applies to a feed at dew point?

F = 1
F > 1
F < 1
0 < f < 1

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Mass Transfer
NSc/NPr is called the

Lewis number
Psychrometric ratio
Stantan number
Sherwood number

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Mass Transfer
The process employing desorption of the absorbed solute by a solvent is called

Osmosis
Sublimation
Reverse osmosis
Elution

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Mass Transfer
Which is the controlling factor for a drum drier?

Both A & B
Neither A nor B
Diffusion
Heat transfer

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Mass Transfer
Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid )

P < P
P = P
P >>P
P

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Mass Transfer
Freundlich equation applies to the adsorption of solute from

None of these
Gaseous solutions at high pressure
Dilute solutions, over a small concentration range
Concentrated solutions

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