Mass Transfer A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height. 30-40 44119 90-100 70-80 30-40 44119 90-100 70-80 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Mass transfer co-efficient varies as DAB0.5, according to the __________ theory. None of these Surface renewal Film Penetration None of these Surface renewal Film Penetration 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 On heating, a vapor phase will appear ; while on cooling, a solid phase will appear The system comprises of an azeotrope The system comprises of partially mis-cible liquids 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 an azeotrope The system comprises of partially mis-cible liquids The system comprises of miscible liquids ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin/yout).For 98% recovery of acetone, the number of trays required is/are 10 9 8 1 10 9 8 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In the absorption of ammonia in water, the main resistance to absorption is by the __________ phase. Gas Both A & B Neither A nor B Liquid Gas Both A & B Neither A nor B Liquid ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The diffusivity (D) in a binary gas mixture is related to the pressure (P) as D ∝ P0.5 D ∝ 1/P0.5 D ∝ 1/P D ∝ 1/P1.5 D ∝ P0.5 D ∝ 1/P0.5 D ∝ 1/P D ∝ 1/P1.5 ANSWER DOWNLOAD EXAMIANS APP
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