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Mass Transfer

Mass Transfer
Paper industry employs __________ driers.

Fluidised bed
Cylinder
Spray
Rotary

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Mass Transfer
Diffusion co-efficient generally depends upon the temperature, pressure & the nature of the components of the system. Its dimension is not the same as that of the

Thermal diffusivity
Mass transfer co-efficient
Volumetric diffusivity
Kinematic viscosity

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Mass Transfer
The vapour pressure exerted by the moisture contained in a wet solid depends upon the

Nature of the solid
Temperature
Nature of the moisture
All of these

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Mass Transfer
At a fixed pressure, the humidity depends upon the partial pressure of vapor in the mixture. Humidity of a vapour free gas is __________ percent.

100
50
Between 0 and 100

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Mass Transfer
When the psychometric ratio is __________ then the adiabatic saturation temperature and wet bulb temperature becomes equal.

< 1
1
?
> 1

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Mass Transfer
Which of the following mixtures does not form an azeotrope at atmosheric pressure?

Water-alcohol
Methyl alcohol-acetone
None of these
Butyl acetate-water

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