Mass Transfer
Air at a particular humidity is heated in a furnace. The new dew point

Decreases
Increases
Remain unchanged
Depends on the extent of heating

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Mass Transfer
The rate of solid-liquid extraction is limited by the

Diffusion of the solute from the solution in contact with the particle to the main bulk of the solution
Diffusion of the solute through the solvent in the pores to the outside of the particle
Phase change of the solute as it dissolves in the solvent
All of these

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Mass Transfer
Priming in a distillation column

Is characterised by the presence of foam throughout the space between trays
Results from very low gas velocity
Reduces the overall pressure drop
Is desirable from point efficiency consideration

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