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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
Durability
Size
Cost

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Mass Transfer
Diffusion in concentrated solutins differs from that in dilute solutions, because of the change in the __________ with the concentration of the solution.

Viscosity
Both A & B
Neither A nor B
Degree of ideality

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Mass Transfer
What is the reflux ratio at total reflux?

Zero
Data insufficient
Infinity
Unity

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Mass Transfer
For achieving rapid drying rate in a spray dryer, the diameter of the particles in the feed should be in the range of __________ microns (1 mm = 1000 microns).

200-300
43835
> 500
22190

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Mass Transfer
The commonly used solvent in supercritical extraction is

Methyl ethyl ketone
Carbon dioxide
Water
Carbon tetrachloride

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Mass Transfer
Which of the following mixtures does not form an azeotrope at atmosheric pressure?

Water-alcohol
Butyl acetate-water
None of these
Methyl alcohol-acetone

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