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Mass Transfer

Mass Transfer
Reverse osmosis is also called

Diffusion
Electrodilysis
Dialysis
Ultrafiltration

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Mass Transfer
Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be

Both A & B
Cooled
Dehumidified
Humidified

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Mass Transfer
Air at a particular humidity is heated in a furnace. The new dew point

Increases
Remain unchanged
Decreases
Depends on the extent of heating

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Mass Transfer
Wetted wall tower experiment determines the

Mass transfer co-efficient
None of these
Molal diffusivity
Volumetric co-efficient

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Mass Transfer
With decrease in the throughput (compared with the design capacity) for a bubble cap distillation column, its efficiency

May increase or decrease ; depends on individual design
Decreases
Increases
Remains same

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Mass Transfer
A pure drug is administered as a sphere and as a cube. The amount of drug is the same in the two tablets. Assuming that the shape and size do not influence the mass transfer, the ratio of rate of dissolution in water at t = 0 for the cubic to spherical tablet is

1.94
1.24
0.54
1.04

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