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Mass Transfer

Mass Transfer
According to Poiseuille's law, the permeability for gas flow through a capillary is proportional to (where, μ = gas viscosity)

μ
√μ
1/μ
μ²

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Mass Transfer
In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero.

Interface
All of these
Gas phase
Liquid phase

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Mass Transfer
If f is defined as above, then which of the following applies to a feed at dew point?

F < 1
0 < f < 1
F > 1
F = 1

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Mass Transfer
The dew point of an unsaturated gas-vapor mixture does not depend upon the __________ of the mixture.

Composition
All of these
Temperature
Total pressure

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Mass Transfer
A solid material shows case hardening properties while drying. Which of the following should be controlled to control the drying process?

Flow rate of inlet air
Humidity of inlet air
Temperature of the solid
Relative humidity of outlet air

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Mass Transfer
Heat in BTU necessary to increase the temperature of 1 lb of gas and its accompanying vapour by 1°F is called the

Humid heat
Specific heat
Latent heat
Sensible heat

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