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Mass Transfer

Mass Transfer
Reverse osmosis is also called

Electrodilysis
Ultrafiltration
Diffusion
Dialysis

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Mass Transfer
Absorption factor method is used to calculate the number of ideal stages, when

Operating line lies above the equilibrium line
Both operating and equilibrium lines are parallel
Operating line lies below the equilibrium line
Pressure drop in the column is very high

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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
Tea percolation employs

Absorption
Leaching
Liquid-liquid extraction
None of these

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Mass Transfer
Which of the following is a suitable absorbent for removal of H₂S from natural gas?

Vetrocoke solution
Monoethanol amine (MEA)
Dilute
Hot water

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Mass Transfer
Flooding results in

Good contact between the fluids
Low tray efficiency
High gas velocity
High tray efficiency

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