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Mass Transfer

Mass Transfer
Most important factor to be considered in the selection of packings for absorbers is the __________ of packing.

Porosity
Size
Durability
Cost

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Mass Transfer
In case of absorption, both the operating and equilibrium lines will be straight for

None of these
Isothermal operation
Dilute solutions and isothermal operation
Dilute solutions

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Mass Transfer
Molecular seives are porous

Silica
Synthetic zeolites crystals/metal alumino-silicates
Alumina
None of these

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Mass Transfer
What is the degree of freedom of an absorption process in which only one component is transferred between phases?

1
3
4
2

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Mass Transfer
The value of NA/(NA + NB), for steady state equimolal counter diffusion of two gases 'A' and 'B' is

0.5
1
∞
2

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Mass Transfer
In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG __________ the absorption factor.

Neither A nor B
Is one at unity value of
Increases with increase in
Both A and B

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