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Mass Transfer

Mass Transfer
Mass transfer co-efficient varies as DAB0.5, according to the __________ theory.

Film
Surface renewal
None of these
Penetration

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Mass Transfer
The fixed cost of a distillation column at minimum reflux ratio is

None of these
Minimum
Infinite
Optimum

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Mass Transfer
Which of the following is not a continuous leaching equipment?

Bollman extractor
Pachuka tank
Hydrocyclones
Kennedy extractor

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Mass Transfer
For a binary mixture distillation process, the degree of freedom is 2. However, if the pressure is fixed in this process, the number of independent variables in this process will be

2
3
1

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Mass Transfer
The mass transfer co-efficient for a solid sphere of radius 'a' dissolving in a large volume of quiescent liquid, in which D is the diffusivity of solute, is

Dependent on the Reynolds number
Proportional to √D
D/a
D/2a

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Mass Transfer
The individual mass transfer co-efficients (moles/m² . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ?

Gas side
Liquid side
Both liquid and gas side
Interfacial

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