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Mass Transfer

Mass Transfer
In paper industry, paper is dried in a __________ dryer.

Heated cylinder
Festoon
Conveyor
Tunnel

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Mass Transfer
Lewis number (Le) is

Sh x Pr
Sc x Pr
St x Sh
Pr x St

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Mass Transfer
At what value of reflux ratio, number of theoretical plates in a distillation column is minimum?

1
< 1
∞

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Mass Transfer
The critical moisture content in case of drying indicates the __________ rate period.

None of these
Beginning of constant
End of falling
Beginning of falling

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Mass Transfer
Surface renewal model of mass transfer was enunciated by

Fick
Danckwerts
Toor and Marchello
Stefan

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Mass Transfer
Drift in a cooling tower is

All of these
Desirable
The water entrained by the circulating air
Dependent on the water lost by evaporation

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