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

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
McCabe-Thiele method

Uses molal units for material and energy balance
Is more accurate than Ponchan-Savarit method
Uses weight fractions to express liquid and vapour composition
Can use any type of units

ANSWER DOWNLOAD EXAMIANS APP