Mass Transfer Danckwerts developed the __________ theory. Surface renewal Film Penetration None of these Surface renewal Film Penetration None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Penetration theory states that the mass transfer co-coefficient is equal to (where, De is diffusivity and 't' is time) (4De/t) (De/t)1/2 (De.t)1/2 (4De/πt)1/2 (4De/t) (De/t)1/2 (De.t)1/2 (4De/πt)1/2 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Can a cooling tower cool water below the wet bulb temperature of inlet air? Yes ; but height of cooling tower will be prohibitively high Yes No Yes ; but the air flow rate should be excessively high Yes ; but height of cooling tower will be prohibitively high Yes No Yes ; but the air flow rate should be excessively high ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If the solubilities of different components (in a liquid-liquid extraction system) increase with rise in temperature, then the temperature above which they dissolve completely is known as the critical solution temperature (CST or consolute temperature). If solubilities increase with decrease in temperature, then CST is the temperature below which they dissolve completely. If a binary system has no critical solution temperature, it implies that The system comprises of an azeotrope The system comprises of miscible liquids On heating, a vapor phase will appear ; while on cooling, a solid phase will appear The system comprises of partially mis-cible liquids The system comprises of an azeotrope The system comprises of miscible liquids On heating, a vapor phase will appear ; while on cooling, a solid phase will appear The system comprises of partially mis-cible liquids ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Large scale drying of wheat is done in a __________ dryer. Tray Fluidised bed Spouted bed Vacuum rotary Tray Fluidised bed Spouted bed Vacuum rotary ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Psychrometry deals with the properties of gas-vapor mixture. Humidity can be determined by the measurement of the __________ of a fibre. Electrical resistance Thermal conductivity Strength None of the listed here Electrical resistance Thermal conductivity Strength None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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