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Mass Transfer

Mass Transfer
The value of L/mG ratio for economical absorption operation ranges from

1.25 to 2.0
0.8 to 1.2
0.5 to 0.8
2.5 to 3.5

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Mass Transfer
During constant rate period, the rate of drying decreases with the

Both A & B
Decrease in air temperature
Increase in air humidity
Neither A nor B

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Mass Transfer
During sensible cooling process

Relative humidity decreases
Relative humidity increases
Wet bulb temperature decreases
Both B and C

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Mass Transfer
Leaching rate is independent of the

None of the listed here
Agitation
Temperature
Particle size

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Mass Transfer
In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of

1.5
-0.6
0.6
-1.5

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Mass Transfer
Fenske-Underwood equation used for calculating the minimum number of theoretical plates in distillation column is valid for

All of these
Constant molal overflow
Total reflux
Constant relative volatility

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