Mass Transfer
For the same system, if the same liquid used in an absorber is decreased, the tower height will

Increase
Decrease or increase ; depends on the type of liquid
Decrease
Remain unaffected

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Mass Transfer
Plate efficiency

Increases due to weeping and dumping of liquid
Increases due to foaming
Increases due to liquid entrainment
Is a function of the mass transfer between liquid and vapour

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Mass Transfer
One mole feed of a binary mixture of a given composition is flash vaporised at a fixed P and T. If Raoult's law is obeyed, then changing the feed composition would effect

The product composition but not the fraction vaporised
The product composition as well as the fraction vaporised
The fraction vaporised but not the product composition
Neither the product composition nor the fraction vaporised

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