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Mass Transfer

Mass Transfer
Mass transfer co-efficient 'K' according to penetration theory varies with mass dif-fusivity as

D1.5
D
D0.5
1/D

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Mass Transfer
Absorption accompanied by heat evolution results in

Increase in equilibrium solubility
Increased capacity of the absorber
None of these
Decrease in equilibrium solubility

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Mass Transfer
The dimension of diffusivity is same as that of the

Molal concentration
Velocity head
Kinematic viscosity
Density

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Mass Transfer
_______ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower.

Peclet
Sherwood
Lewis
Stanton

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Mass Transfer
Dorr thickener is an equipment used for

Leaching
Classification
Sedimentation
Clarification

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Mass Transfer
At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower.

Cannot be predicted as data are insufficient
Is lower than
Is greater than
Is same as

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