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Mass Transfer

Mass Transfer
__________ column is used in gas absorption process.

Seive/perforated tray
Wetted wall
Packed
Bubble cap

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Mass Transfer
COâ‚‚ can be absorbed by

Heated charcoal
Alumina
Cold Ca(OH)â‚‚
Hot cupric oxide

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Mass Transfer
Humidity chart is useful for the solution of problems concerning condensation, vaporisation and air conditioning. At a given dry bulb temperature, value of humidity obtained from the humidity chart directly, is in terms of __________ humidity.

Percentage
Relative
Molal
None of these

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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).

43835
200-300
22190
> 500

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Mass Transfer
Ordinary diffusion process is also called __________ diffusion.

Thermal
Pressure
Forced
Concentration

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Mass Transfer
In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at __________ reflux.

Minimum
Total
Maximum permissible
Operating

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