Mass Transfer
In extraction, as the temperature increases, the area of hetrogeneity (area covered by binodal curve)

Increases
Remains unchanged
Decreases
None of these

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Mass Transfer
Entrainer used in azeotropic distillation should

Have high viscosity to provide high tray efficiency
Form a low boiling azeotrope with one of the constituents of the mixture
Form a new azeotrope of low relative volatility with one of the constituents of the mixture
Have high latent heat of vaporisation

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