Mass Transfer
The humid volume may be increased by increasing the

Neither A nor B
Temperature at constant humidity
Humidity at constant temperature
Both A & B

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Mass Transfer
Relative humidity is the ratio of the

Partial pressure of the vapour to the vapour pressure of the liquid at gas temperature
Actual humidity to saturation humidity
None of these
Partial pressure of the vapour to the vapour pressure of the liquid at room temperature

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Mass Transfer
Pick out the wrong statement. Raoult's law does not apply, when the

Component molecules are nonpolar
Size of component molecules are not equal
Attractive forces between like and unlike molecules in the solution are approximately equal
Chemical combination or molecular association between unlike molecules takes place in the formation of solution

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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

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

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