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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.

Durability
Porosity
Size
Cost

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Mass Transfer
Air initially at 101. 3 kPa and 40°C and with a relative humidity of 50%, is cooled at constant pressure to 30°C. The cooled air has a

Higher absolute (specific) humidity
Higher wet bulb temperature
Higher dew point
Higher relative humidity

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Mass Transfer
Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the __________ number.

Stanton
Sherwood
Schmidt
Peclet

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Mass Transfer
Nitrobenzene (boiling point = 210.6°C) is steam distilled at 1 atm pressure.Nitrobenzene will distill off __________ °C.

At < 100
Between 100 and 210
At > 210.6
None of the listed here

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Mass Transfer
Which of the following liquid-vapor contacting devices provides maximum contact surface area for a particular duty?

Wetted wall column
Bubble cap column
Randomly packed column
Sieve plate column

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Mass Transfer
Dimension of mass diffusivity is the same as that of

Surface tension
Kinematic viscosity
Pressure
Dynamic viscosity

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