Mass Transfer In case of unsaturated air Dew point < wet bulb temperature Wet bulb temperature < dry bulb temperature None of the listed here Both of the options given here Dew point < wet bulb temperature Wet bulb temperature < dry bulb temperature None of the listed here Both of the options given here ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Inside the distillation column, the Pressure increases gradually from bottom to the top of the column None of these Driving force for the vapour flow is the pressure drop Liquids are not always at their bubble points Pressure increases gradually from bottom to the top of the column None of these Driving force for the vapour flow is the pressure drop Liquids are not always at their bubble points ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer With increase in temperature, the rate of leaching increases, because the Diffusivity of solute increases Viscosity of solvent decreases Thermal conductivity of solute increases None of these Diffusivity of solute increases Viscosity of solvent decreases Thermal conductivity of solute increases None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer To increase the absorption factor, (where, G = gas flow rate, S = solvent flow rate) Decrease both 'G' and 'S' Increase 'G' and decrease 'S' Increase 'S' and decrease 'G' Increase both 'G' and 'S' Decrease both 'G' and 'S' Increase 'G' and decrease 'S' Increase 'S' and decrease 'G' Increase both 'G' and 'S' ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Unsaturated air (with dry bulb and wet bulb temperatures being 45°C and 25°C respectively) is passed through a water spray chamber maintained at 23°C. The air will be cooled and Dehumidified None of these Humidified at constant wet bulb temperature Humidified with wet bulb temperature decreasing Dehumidified None of these Humidified at constant wet bulb temperature Humidified with wet bulb temperature decreasing 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 8 9 1 10 8 9 1 ANSWER DOWNLOAD EXAMIANS APP
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