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Mass Transfer

Mass Transfer
If Rm is the minimum reflux ratio, the optimum reflux ratio may be around __________ Rm.

1.2 to 1.5
3 to 4
2.5 to 3
5

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Mass Transfer
The relative humidity of air decreases in-spite of an increase in the absolute humidity, when the

Temperature rises
Pressure falls
Pressure rises
Temperature falls

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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
Relative volatility
Density
Viscosity

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Mass Transfer
Paper industry employs __________ driers.

Fluidised bed
Cylinder
Rotary
Spray

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Mass Transfer
Psychrometry deals with the properties of gas-vapor mixture. Humidity can be determined by the measurement of the __________ of a fibre.

Thermal conductivity
Strength
Electrical resistance
None of the listed here

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Mass Transfer
Pick out the system with maximum boiling azeotrope at 1 atm.

None of these
Benzene-ethyl alcohol
Ethyl alcohol-water
Acetone chloroform

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