Mass Transfer In the constant rate period of the rate of drying curve for batch drying, Surface evaporation of unbound moisture occurs None of these Cracks develop on the surface of the solid Rate of drying decreases abruptly Surface evaporation of unbound moisture occurs None of these Cracks develop on the surface of the solid Rate of drying decreases abruptly ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer A mixture of 10% C₆H₆ vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around __________ °C. 20 21.7 18.7 27.3 20 21.7 18.7 27.3 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 partially mis-cible liquids On heating, a vapor phase will appear ; while on cooling, a solid phase will appear The system comprises of miscible liquids The system comprises of an azeotrope The system comprises of partially mis-cible liquids On heating, a vapor phase will appear ; while on cooling, a solid phase will appear The system comprises of miscible liquids ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at __________ reflux. Maximum permissible Operating Total Minimum Maximum permissible Operating Total Minimum ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following is the most suitable for extraction in a system having very low density difference? Packed extraction tower Pulsed extractor Mixer-settler extractor Centrifugal extractor Packed extraction tower Pulsed extractor Mixer-settler extractor Centrifugal extractor ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Unit of molal diffusivity is Gm moles/cm² . sec Gm moles/cm². sec Gm moles/cm. sec Cm²/sec gm . mole Gm moles/cm² . sec Gm moles/cm². sec Gm moles/cm. sec Cm²/sec gm . mole ANSWER DOWNLOAD EXAMIANS APP
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