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Mass Transfer

Mass Transfer
At 750°K and 1 atm, the approximate value of Schmidt number for air is

10
0.01
1
0.1

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

Re0.33
Re0.83
Re0.53
Re

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Mass Transfer
In stripping section of continuous distillation column, the

None of these
Liquid is enriched with high boiler
Liquid is stripped of high boiler
Vapour is stripped of low boiler

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Mass Transfer
The ratio of Murphree plate efficiency to point efficiency is always > 1 in a __________ flow model.

Both plug & perfectly mixed
Plug
None of the listed here
Perfectly mixed

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Mass Transfer
Which of the following assumes constant molal vaporisation and overflow?

Ponchan-Savarit method
McCabe-Thiele method
Plate absorption column
Enthalpy concentration method

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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
Liquid phase
All of these
Gas phase

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