Mass Transfer
Use of raschig rings in place of crushed stones as packing in packed beds (other things being same)

Increases pressure drop, decreases surface area
Decreases pressure drop, increases surface area
Decreases pressure drop, decreases surface area
Increases pressure drop, increases surface area

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
All of the listed here
At constant humidity & total pressure is fixed
Decreases with decrease in pressure

ANSWER DOWNLOAD EXAMIANS APP