Mass Transfer Which one of the following devices is not used for both the absorption as well as the liquid-liquid extraction processes? Spray towers Wetted wall columns Plate towers Packed towers Spray towers Wetted wall columns Plate towers Packed towers ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following same diameter columns gives lowest pressure drop per unit height? Bubble-cap column Packed column (stacked) Sieve-plate column Randomly packed column Bubble-cap column Packed column (stacked) Sieve-plate column Randomly packed column ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing. Either A, or B ; depends on the type of packing Greater than Smaller than Equal to Either A, or B ; depends on the type of packing Greater than Smaller than Equal to ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant. None of these Partial pressure of water vapor Relative humidity Wet bulb temperature None of these Partial pressure of water vapor Relative humidity Wet bulb temperature ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively.The humidity of air sample expressed as kg of water vapour/kg of dry air is 0.152 0.122 0.048 0.079 0.152 0.122 0.048 0.079 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The cooling effect in a cooling tower can be speeded up by Reducing the humidity of the air All of the listed here Reducing the barometric pressure Increasing the air velocity and area of exposed wet surface Reducing the humidity of the air All of the listed here Reducing the barometric pressure Increasing the air velocity and area of exposed wet surface ANSWER DOWNLOAD EXAMIANS APP
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