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Mass Transfer

Mass Transfer
Humid volume, at a given temperature is a/an __________ function of humidity.

Exponential
Logarithmic
Inverse
Linear

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Mass Transfer
Agitator is provided in a crystalliser for

Crystal growth
Avoiding deposition on cooler surfaces
All of these
Formation of nuclei

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Mass Transfer
At __________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation.

Maximum permissible
Total
Operating
Minimum

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Mass Transfer
Moisture content of a substance when at equilibrium with a given partial pressure of the vapour is called the __________ moisture.

Unbound
Free
Bound
Equilibrium

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Mass Transfer
Air initially at 101. 3 kPa and 40°C and with a relative humidity of 50%, is cooled at constant pressure to 30°C. The cooled air has a

Higher wet bulb temperature
Higher absolute (specific) humidity
Higher dew point
Higher relative humidity

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Mass Transfer
Mass transfer co-efficient of liquid is

None of these
Affected much less by temperature than that for gases
Not affected by the temperature
Affected more by temperature than that for gases

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