Mass Transfer In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG __________ the absorption factor. Both A and B Increases with increase in Is one at unity value of Neither A nor B Both A and B Increases with increase in Is one at unity value of Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer A solid material shows case hardening properties while drying. Which of the following should be controlled to control the drying process? Flow rate of inlet air Temperature of the solid Relative humidity of outlet air Humidity of inlet air Flow rate of inlet air Temperature of the solid Relative humidity of outlet air Humidity of inlet air ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m² and the solvent flow, rate is 400 moles of S/m². hr. The equilibrium data is represented by Y = 3X² , where Y is in moles of a A/moles of B and X is in moles A/moles of S. The maximum percentage extraction achieved in the unit is 0.25 0.5 0.7 0.9 0.25 0.5 0.7 0.9 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Though, theoretically the adsorption & desorption isotherms is expected to coincide but sometimes at least a part of the isotherms does not coincide and this phenomenon is known as adsorption hysterisis. In such cases, the desorption equilibrium pressure is __________ that obtained for adsorption. Same as Either same or higher than Lower than Higher than Same as Either same or higher than Lower than Higher than ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The value of NA/(NA + NB) for steady state molecular diffusion of gas 'A' through non-diffusing gas 'B' is 2 ∞ 0.5 1 2 ∞ 0.5 1 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 None of these Humidified with wet bulb temperature decreasing Dehumidified Humidified at constant wet bulb temperature None of these Humidified with wet bulb temperature decreasing Dehumidified Humidified at constant wet bulb temperature ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS