Mass Transfer
Which of the following parameters remains constant during chemical dehumidifica-tion?

Wet bulb temperature
Partial pressure of vapour
None of these
Dry bulb temperature

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Mass Transfer
Flights in a rotary dryer are provided to

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
Reduce the residence time of solid

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