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Mass Transfer

Mass Transfer
If Rm is the minimum reflux ratio, the optimum reflux ratio may be around __________ Rm.

3 to 4
1.2 to 1.5
5
2.5 to 3

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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
The film penetration model of mass transfer was enunciated by

Gilliland
Fick
Stefan
Toor and Marchello

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Mass Transfer
Cox chart is useful in the design of

Evaporator
Dryer
Distillation column
Crystalliser

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Mass Transfer
Minimum reflux ratio in a distillation column results in

Maximum condenser size
Optimum number of trays
Minimum number of trays
Minimum reboiler size

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Mass Transfer
Humidification involves mass transfer between a pure liquid phase and a fixed gas, which is

Insoluble in the liquid
Soluble in the liquid
At a fixed temperature
Non-ideal in nature

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