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Mass Transfer

Mass Transfer
The unit of volumetric diffusivity is

Cm³/sec
Cm/sec
Cm²/sec
Cm²/seC₂

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Mass Transfer
The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the __________ temperature.

Dew point
None of these
Dry bulb
Wet bulb

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Mass Transfer
For turbulent mass transfer in pipes, the Sherwood number depends on the Reynolds number as

Re0.33
Re0.53
Re
Re0.83

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Mass Transfer
Which of the following binary systems is an example of a maximum boiling azeotrope?

Water-hydrochloric acid
Water-ethyl alcohol
Acetone-carbon disulphide
None of the listed here

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Mass Transfer
Leaching rate is independent of the

Temperature
Agitation
None of the listed here
Particle size

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Mass Transfer
Positive deviation from Raoult's law means a mixture whose total pressure is

Less than that computed for ideality
None of these
Less than the sum of the vapour pressure of the components
Greater than that computed for ideality

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