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 wet bulb temperature Higher dew point Higher relative humidity Higher absolute (specific) humidity Higher wet bulb temperature Higher dew point 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 Less number of trays are required 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 Composition of the residue remains unchanged Less number of trays are required 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 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The boiling points of pure components of a binary system __________ with increase in total pressure of the system. May increase or decrease, depends on the system Remains unchanged Increases Decreases May increase or decrease, depends on the system Remains unchanged Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Humid volume is the total volume in m³ of 1 kg of 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 Vapour laden gas at 1 atm. and room temperature ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The cooling effect in a cooling tower can not be increased by None of these Lowering the barometric pressure Increasing the air velocity over the wet surfaces Reducing the humidity of entering air None of these Lowering the barometric pressure Increasing the air velocity over the wet surfaces Reducing the humidity of entering air ANSWER DOWNLOAD EXAMIANS APP
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