Mass Transfer
Reboiler is considered as one theoretical plate, because

Of the assumption that vapour and liquid leaving the reboiler are in equilibrium
Reboiler itself contains one plate
Vapour is recycled to the column
None of these

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
Dew point of an air-water vapor mixture

Corresponding to any point on the humidity chart is obtained by projecting a line through this point parallel to the temperature axis and to the saturation curve
At constant humidity & total pressure is fixed
All of the listed here
Decreases with decrease in pressure

ANSWER DOWNLOAD EXAMIANS APP