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Mass Transfer

Mass Transfer
Which of the following is the most commonly used leaching solvent in vegetable oil industry?

Furfurol
Liquid SO₂
Phenol
Hexane

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Mass Transfer
Unit operation involved in the prilling of urea is

Both B and C
Drying
Crystallisation
Evaporation

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

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

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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
Interfacial
Liquid side
Both liquid and gas side

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Mass Transfer
Very tall packed towers are divided into series of beds to

Reduce the overall pressure drop
Avoid flooding
Reduce liquid hold-up
Avoid channelling

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Mass Transfer
With increase in gas rate, the number of transfer units, NtoG, for a fixed degree of absorption by a fixed amount of solvent

Decreases linearly
Remains unaffected
Decreases
Increases

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