Mass Transfer
Flights in a rotary dryer are provided to

Reduce the residence time of solid
None of these
Lift and shower the solids thus exposing it thoroughly to the drying action of the gas
Increase the residence time of the solid

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Mass Transfer
For a ternery mixture, in which equilateral triangular co-ordinate is used in leaching and extraction, a __________ of the equilateral triangular co-ordinates.

Binary mixture is represented by the apex
Ternery mixture is represented by the sides
Binary mixture is represented by any point inside
Pure component is represented by the apex

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