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Mass Transfer

Mass Transfer
Langmuir equation is associated with

Multicomponent absorption
Leaching
Adsorption
Steam distillation

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Mass Transfer
For ethanol-water system, the lowering of distillate quality from 95% to 92% will cause __________ plate requirement.

No change in theoretical
Major decrease in the number of
Marginal decrease in the number of
None of the listed here

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Mass Transfer
Liquid diffusivity is of the order of __________ cm² /second.

10-5 to 10-6
0.01
0.1
> 1

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

Heat transfer
Diffusion
Neither A nor B
Both A & B

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Mass Transfer
The velocity, concentration and temperature boundary, for the boundary layer development on a flat plate during connective mass transfer will be same, if

NSc = NPr = NLe
NSc = NLe
NSc = 1
NPr = NLe

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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.

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

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