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Mass Transfer

Mass Transfer
In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of

-1.5
1.5
-0.6
0.6

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Mass Transfer
Which of the following is not fixed by the process requirements, in the design of absorbers?

Terminal concentrations of gas stream
Composition of the entering liquid
None of these
Flow rate of the entering gas

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Mass Transfer
The dimension of diffusivity is same as that of the

Velocity head
Density
Molal concentration
Kinematic viscosity

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Mass Transfer
Which of the following increases during evaporative cooling process with recirculated water supply?

Relative humidity
Wet bulb temperature
Both B and C
Partial pressure of vapour

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Mass Transfer
Which of the following is an undesirable characteristic for the solvent used in gas absorption?

None of these
Low vapor pressure
High gas solubility
Low viscosity

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Mass Transfer
L/mG is the expression for

Absorption factor
Slope of operating line in stripper
Slope of operating line in absorber
Brinkman number

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