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Mass Transfer

Mass Transfer
Penetration model (theory) for mass transfer was enunciated by

Danckwerts
Toor and Marchello
Kissinevskii
Higbie

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Mass Transfer
Rotary dryers cannot handle __________ materials.

Free flowing
Dry
Sticky
Grannular

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Mass Transfer
If moisture content of solid on dry basis is X, then the same on wet basis is

(X - 1)/X
X/(X + 1)
(X + 1)/X
X/(X - 1)

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Mass Transfer
An azeotropic mixture is a __________ mixture.

Binary
Ternary
None of these
Constant boiling point

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Mass Transfer
In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero.

Liquid phase
Interface
All of these
Gas phase

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Mass Transfer
Critical humidity of a solid salt means the humidity

Above which it will always become damp
Above Which it will always become dry and below which it will always stay damp
Below which it will always stay dry
Both A and B

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