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Mass Transfer

Mass Transfer
According to Poiseuille's law, the permeability for gas flow through a capillary is proportional to (where, μ = gas viscosity)

1/μ
μ²
√μ
μ

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Mass Transfer
The operation involved when the soluble material is largely on the surface of an insoluble solid and is merely washed off by the solvent is called

Elutriation or elution
Percolation
None of these
Decoction

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Mass Transfer
Mechanism of moisture removal in case of freeze drying of food stuff is by

Adsorption
Sublimation
Evaporation
Dehydration

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Mass Transfer
Under conditions of flooding in packed tower, the gas pressure drop

Increases rapidly
Decreases rapidly
Remains constant
Is maximum

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Mass Transfer
Pick out the correct relationship. (where, Ri = internal reflux ratio Ro = external reflux ratio. )

(1 + Ro) = Ro/Ri
(1 - Ro) = Ro/Ri
(1 - Ri) = Ro/Ri
(1 + Ri) = Ro/Ri

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Mass Transfer
An azeotropic mixture is a __________ mixture.

None of these
Binary
Constant boiling point
Ternary

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