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Mass Transfer

Mass Transfer
The unit of volumetric diffusivity is

Cm²/sec
Cm/sec
Cm³/sec
Cm²/seC₂

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Mass Transfer
Diameter of raschig rings used in packed tower in industry is normally around __________ inches.

12
2
8
18

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Mass Transfer
The rate of mass transfer is not dependent upon the

Interfacial surface exposed between the phases
Degree of dispersion of one fluid in the other
Both A & B
None of these

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Mass Transfer
The boiling points of pure components of a binary system __________ with increase in total pressure of the system.

Increases
Decreases
May increase or decrease, depends on the system
Remains unchanged

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Mass Transfer
The ratio of Murphree plate efficiency to point efficiency is 1 in a __________ flow model.

None of the listed here
Both plug & perfectly mixed
Plug
Perfectly mixed

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Mass Transfer
The adiabatic saturation curve for a vapour-gas mixture is

Slightly concave upward
None of these
Slightly concave downward
Straight line

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