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Mass Transfer

Mass Transfer
Rayleigh's equation applies to __________ distillation.

Differential
Steam
Flash
Continuous

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Mass Transfer
Capacity of a rotary dryer depends on its

Inclination with ground surface
Both Inclination with ground surface & R.p.m
None of the listed here
R.p.m

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Mass Transfer
An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively.The humidity of air sample expressed as kg of water vapour/kg of dry air is

0.152
0.122
0.079
0.048

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Mass Transfer
The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the __________ temperature.

None of these
Dry bulb
Wet bulb
Dew point

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Mass Transfer
Which of the following parameters remains almost constant during adiabatic saturation of unsaturated air?

Dew point
Dry bulb temperature
Wet bulb temperature
None of these

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Mass Transfer
When the temperature and humidity of air is low, we usually use __________ draft cooling tower.

Forced
Natural
Induced
None of these

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