Mass Transfer
Unsaturated air (with dry bulb temperature and dew point being 35°C and 18°C respectively) is passed through a water spray chamber maintained at 15°C. The air will be cooled

At the same relative humidity
And dehumidified with increase in wet bulb temperature
And dehumidified with decrease in wet bulb temperature
And humidified

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP