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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.

Size
Cost
Porosity
Durability

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Mass Transfer
__________ extractor is used for the concentration of radioactive nuclear waste.

Seive plate
Mixer-settler
Pulsed column
None of the listed here

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Mass Transfer
Which of the following is considered equivalent to one theoretical stage in Mc-Cabe Thiele's method?

Partial condenser
Reboiler
Both B and C
Total condenser

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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.

Relative
None of these
Percentage
Molal

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Mass Transfer
The wet and 'dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be __________ °C.

< 25
> 25
25
-25

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Mass Transfer
Separation of a mixture of two gases by absorption in the liquid solvent depends upon the difference in their

Solubility
Viscosity
Density
Relative volatility

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