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Mass Transfer

Mass Transfer
Dorr thickener is an equipment used for

Classification
Leaching
Clarification
Sedimentation

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Mass Transfer
Reboiler is considered as one theoretical plate, because

None of these
Reboiler itself contains one plate
Of the assumption that vapour and liquid leaving the reboiler are in equilibrium
Vapour is recycled to the column

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Mass Transfer
Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C?

Heating only
Evaporative cooling
Both heating and humidification
Humidification only

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Mass Transfer
The film penetration model of mass transfer was enunciated by

Stefan
Toor and Marchello
Gilliland
Fick

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Mass Transfer
Schmidt number is given by

Μ/ρDAB
Re/Pe
Sh x Pe
Re.Pe

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Mass Transfer
At 750°K and 1 atm, the approximate value of Schmidt number for air is

10
1
0.1
0.01

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