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MASS TRANSFER

Mass Transfer
With increase in solvent rate, the number of transfer units, NtoG, for a fixed degree of absorption from a fixed amount of gas

Increases
Decreases
Remains same
Decreases linearly

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Mass Transfer
Leaching rate is independent of the

Agitation
Temperature
Particle size
None of the listed here

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Mass Transfer
Which of the following remains constant during sensible cooling process ?

Partial pressure of vapour
Specific humidity & Partial pressure of vapour
None of the listed here
Specific humidity

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Mass Transfer
The cooling effect in a cooling tower can be speeded up by

Reducing the barometric pressure
All of the listed here
Reducing the humidity of the air
Increasing the air velocity and area of exposed wet surface

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Mass Transfer
Batch tray dryers suffers from the disadvantage of

High maintenance cost
High labour cost & low heat economy
All of the listed here
Non-uniform & low production rate

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