Mass Transfer
The adiabatic saturation curve for a vapour-gas mixture is

Slightly concave upward
None of these
Slightly concave downward
Straight line

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Mass Transfer
Flights in a rotary dryer are provided to

Increase the residence time of the solid
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

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