Mass Transfer
The apex of an equilateral-triangular coordinate (in ternary liquid system) represents a/an

Pure component
Insoluble binary system
Binary mixture
Ternary mixture

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Mass Transfer
Flights in a rotary dryer are provided to

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

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