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Mass Transfer

Mass Transfer
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

≤ 1
< 1
> 1
1

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Mass Transfer
Removal of __________ exemplifies an adsorption unit operation.

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

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Mass Transfer
Which of the following is a suitable absorbent for removal of H₂S from natural gas?

Hot water
Vetrocoke solution
Monoethanol amine (MEA)
Dilute

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Mass Transfer
In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the

Approach is 10°F
Both A & B
Range is 15°F
Neither A nor B

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Mass Transfer
Ion exchange process is similar to

Extraction
Absorption
Adsorption
Leaching

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Mass Transfer
Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as

K ∝ D1.5
K ∝ D2
K ∝ D
K ∝ √D

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