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Mass Transfer

Mass Transfer
The suitable evaporator for concentration of foaming liquids is a __________ evaporator.

Long tube
Vacuum
Falling film
Short tube

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Mass Transfer
Selectivity of the solvent used in solvent extraction should be

1
> 1
< 1

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Mass Transfer
Extraction of pencillin employs a __________ extraction coloumn.

None of these
Centrifugal
Packed
Plate

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Mass Transfer
With increase in solvent rate, the number of transfer units, NtoG, for a fixed degree of absorption from a fixed amount of gas

Decreases
Decreases linearly
Remains same
Increases

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Mass Transfer
In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of

-1.5
0.6
1.5
-0.6

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Mass Transfer
Psychrometry deals with the properties of gas-vapor mixture. Humidity can be determined by the measurement of the __________ of a fibre.

Strength
Thermal conductivity
None of the listed here
Electrical resistance

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