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Mass Transfer

Mass Transfer
Tea percolation employs

Leaching
Absorption
Liquid-liquid extraction
None of these

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Mass Transfer
Swenson-Walker crystalliser is a __________ unit

Continuous
Batch
Semi-batch
Cooling (adiabatic)-cum-evaporation

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Mass Transfer
In extraction, as the temperature increases, the area of hetrogeneity (area covered by binodal curve)

Decreases
None of these
Remains unchanged
Increases

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Mass Transfer
Which of the following is the most suitable for extraction in a system having very low density difference?

Mixer-settler extractor
Centrifugal extractor
Packed extraction tower
Pulsed extractor

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Mass Transfer
When adsorption hysteresis is observed, the desorption equilibrium pressure is __________ that obtained by adsorption.

Always lower than
Same as
Dependent on the system; can be either lower or higher than
Always higher than

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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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