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Mass Transfer

Mass Transfer
Schmidt number is given by

Re/Pe
Sh x Pe
Re.Pe
Μ/ρDAB

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Mass Transfer
In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be

5 metres above ground
2 metres above the ground
10 metres above ground
At ground level

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Mass Transfer
For turbulent mass transfer in pipes, the Sherwood number depends on the Reynolds number as

Re0.83
Re0.53
Re
Re0.33

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Mass Transfer
Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be

Cooled
Dehumidified
Humidified
Both A & B

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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.

Dew point
None of these
Dry bulb
Wet bulb

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Mass Transfer
Which of the following employs an accessory known as 'drift eliminator' ?

Rotary dryer
Multiple effect evaporator
Rotating disc contactor
Mechanical draft cooling tower

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