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Mass Transfer

Mass Transfer
Large scale drying of wheat is done in a __________ dryer.

Fluidised bed
Spouted bed
Vacuum rotary
Tray

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Mass Transfer
Which of the following plays an important role in problems of simultaneous heat and mass transfer?

Sherwood number
Schmidt number
Lewis number
Prandtl number

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Mass Transfer
The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is

∞
-ve
+ve

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Mass Transfer
For a distillation column operating at minimum reflux, the

None of these
Number of plates required will be maximum
Concentration of liquid and vapour leaving a plate will be same
Reflux ratio will be maximum

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Mass Transfer
Which of the following quantities need not be fixed before starting the design of a co-current absorber?

Heat gain or loss
None of the listed here
Flow rate of entering liquid
Flow rate of gas

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Mass Transfer
Which of the following is a suitable absorbent for removal of Hâ‚‚S from natural gas?

Monoethanol amine (MEA)
Vetrocoke solution
Dilute
Hot water

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