Mass Transfer
Moisture content of a substance when at equilibrium with a given partial pressure of the vapour is called the __________ moisture.

Unbound
Bound
Equilibrium
Free

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Mass Transfer
Flights in a rotary dryer are provided to

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

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