Mass Transfer Air initially at 101. 3 kPa and 40°C and with a relative humidity of 50%, is cooled at constant pressure to 30°C. The cooled air has a Higher dew point Higher wet bulb temperature Higher relative humidity Higher absolute (specific) humidity Higher dew point Higher wet bulb temperature Higher relative humidity Higher absolute (specific) humidity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer An aqueous solution of methanol is to be distilled in a tray column. High pressure steam is available as a source of heat. For a given reflux ratio and overhead composition, two options are being explored; (i) a reboiler is used and (ii) no reboiler is used but steam is fed directly to the bottom of the column. As compared to option (i), in option (ii) Composition of the residue remains unchanged More number of trays are required and the residue composition is more dilute in methanol More number of trays are required but the residue composition remains unchanged Less number of trays are required Composition of the residue remains unchanged More number of trays are required and the residue composition is more dilute in methanol More number of trays are required but the residue composition remains unchanged Less number of trays are required ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The boiling points of pure components of a binary system __________ with increase in total pressure of the system. Decreases Increases May increase or decrease, depends on the system Remains unchanged Decreases Increases May increase or decrease, depends on the system Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Humid volume is the total volume in m³ of 1 kg of Vapour laden gas at 1 atm. and room temperature Gas plus its accompanying vapour at 1 atm. and room temperature Gas plus its accompanying vapour at 1 atm. and gas temperature Vapour laden gas at 1 atm. and gas temperature Vapour laden gas at 1 atm. and room temperature Gas plus its accompanying vapour at 1 atm. and room temperature Gas plus its accompanying vapour at 1 atm. and gas temperature Vapour laden gas at 1 atm. and gas temperature ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The cooling effect in a cooling tower can not be increased by Increasing the air velocity over the wet surfaces None of these Reducing the humidity of entering air Lowering the barometric pressure Increasing the air velocity over the wet surfaces None of these Reducing the humidity of entering air Lowering the barometric pressure ANSWER DOWNLOAD EXAMIANS APP
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