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Mass Transfer

Mass Transfer
A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height.

70-80
90-100
44119
30-40

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Mass Transfer
Separation of two or more components of a liquid solution can not be achieved by

Evaporation
Fractional crystallisation
Absorption
Liquid extraction

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Mass Transfer
Nitrobenzene (boiling point = 210.6°C) is steam distilled at 1 atm pressure.Nitrobenzene will distill off __________ °C.

None of the listed here
At < 100
At > 210.6
Between 100 and 210

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Mass Transfer
At minimum reflux ratio for a given separation

Number of plates is zero
Number of plates is infinity
Minimum number of the theoretical plates is required
Separation is most efficient

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Mass Transfer
At constant pressure, with increase of temperature, the dew point will

Remain unchanged
Increase/decrease ; depends on the temperature
Decrease
Increase

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

1
< 1
> 1

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