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Mass Transfer

Mass Transfer
Molecular seives are regenerated by heating to __________ °C.

< 150
> 1000
200-330
> 500

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Mass Transfer
Schmidt number is given by

Sh x Pe
Re.Pe
Re/Pe
Μ/ρDAB

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Mass Transfer
During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant.

None of these
Wet bulb temperature
Partial pressure of water vapor
Relative humidity

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Mass Transfer
Moisture content of a substance when at equilibrium with a given partial pressure of the vapour is called the __________ moisture.

Free
Unbound
Equilibrium
Bound

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Mass Transfer
Moisture contained by a substance in excess of the equilibrium moisture is called the __________ moisture.

Critical
Unbound
Bound
Free

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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

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

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