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Mass Transfer

Mass Transfer
The fixed cost of a distillation column at minimum reflux ratio is

Infinite
None of these
Optimum
Minimum

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

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

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Mass Transfer
Which of the following operations does not involve leaching?

Dissolving pharmaceutical products from bark or roots
Dissolving gold from ores
Removing nicotine from its water solution by kerosene
Dissolving sugar from the cells of the beet

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Mass Transfer
The dimension of diffusivity is same as that of the

Kinematic viscosity
Molal concentration
Density
Velocity head

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Mass Transfer
The binary diffusivity in gases does not depend upon the

Pressure
Nature of the components
None of the listed here
Temperature

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Mass Transfer
For the same process conditions, the reflux ratio of an unlagged distillation column

Increases in summer
None of these
Decreases in winter
Increases in winter

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