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Mass Transfer

Mass Transfer
Ion exchange process is similar to

Adsorption
Absorption
Leaching
Extraction

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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

Dehumidified
Cooled
Humidified
Both A & B

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Mass Transfer
Critical humidity of a solid salt means the humidity

Above which it will always become damp
Both A and B
Below which it will always stay dry
Above Which it will always become dry and below which it will always stay damp

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Mass Transfer
During drying operation, it is easier to remove the __________ moisture.

Unbound
Equilibrium
Critical
Bound

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Mass Transfer
The most economical range of absorption factor is

1.25 to 2
2.5 to 3
5 to 10
2 to 2.5

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Mass Transfer
It takes 6 hours to dry a wet solid from 50% moisture content to the critical moisture content of 15%. How much longer it will take to dry the solid to 10% moisture content, under the same drying conditions? (The equilibrium moisture content of the solid is 5%).

94 min
15 min
71 min
51 min

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