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Mass Transfer

Mass Transfer
Operating velocity in a packed tower is usually __________ the flooding velocity.

Twice
Half
Equal to
More than

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Mass Transfer
For a binary mixture distillation process, the degree of freedom is 2. However, if the pressure is fixed in this process, the number of independent variables in this process will be

3
1
2

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

None of the listed here
Nature of the components
Temperature
Pressure

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Mass Transfer
Equilibrium-moisture curves of different solids

Are different
Depend on the humidity of the gas
None of these
Are same

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Mass Transfer
In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed

q = 1
q < 1
q > 1
q = 0

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Mass Transfer
Corresponding to Prandtl number in heat transfer, the dimensionless group in mass transfer is the __________ number.

Peclet
Schmidt
Sherwood
Stanton

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