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Mass Transfer

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

Infinite
None of these
Minimum
Optimum

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Mass Transfer
In a counter-current extractor, as the axial mixing increases, the extraction efficiency

Decreases
Depends on the pressure of the system
Increases
Remains unchanged

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Mass Transfer
Leaching of sugar from sugar beets is done by

Lime water
Hot water
Hexane
Dilute H₂SO₄

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Mass Transfer
Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be

Both A & B
Dehumidified
Humidified
Cooled

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Mass Transfer
In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction xf = 0.2. The mixture splits into an extract phase E and a raf-finate phase R containing A at xB = 0.5 and xR = 0.05 respectively. The total mass of the extract phase is (in Kg)

6.89
8.89
8.25
10

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Mass Transfer
To remove all the moisture from a wet solid it requires exposure to __________ air.

Highly humid
None of these
Perfectly dry
High temperature

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