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Mass Transfer

Mass Transfer
Ion exchange process is similar to

Adsorption
Extraction
Leaching
Absorption

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Mass Transfer
For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is

Known
Not required
Calculated
Unknown

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Mass Transfer
For __________ drying, the effects of velocity, temperature and humidity of the gas and the thickness of the solid are the same.

Constant rate
Both A & B
Unsaturated surface
Neither A nor B

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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 ?

Liquid side
Gas side
Interfacial
Both liquid and gas side

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Mass Transfer
Though, theoretically the adsorption & desorption isotherms is expected to coincide but sometimes at least a part of the isotherms does not coincide and this phenomenon is known as adsorption hysterisis. In such cases, the desorption equilibrium pressure is __________ that obtained for adsorption.

Higher than
Either same or higher than
Lower than
Same as

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Mass Transfer
Removal of __________ exemplifies an adsorption unit operation.

Water from petrol
Ammonia from coke oven gas
None of the listed here
Uranium from its ore

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