Mass Transfer Which of the following gas-liquid contacting devices incurs the least pressure drop for a particular duty? Perforated tray tower Grid tray tower Wetted wall tower Bubble cap tower Perforated tray tower Grid tray tower Wetted wall tower Bubble cap tower ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Tea percolation employs None of these Liquid-liquid extraction Absorption Leaching None of these Liquid-liquid extraction Absorption Leaching ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Heat sensitive materials like certain pharmaceuticals and food stuffs can be dried in a/an __________ dryer. Indirect tray Spray Freeze None of these Indirect tray Spray Freeze None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer H₂S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H₂S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in metres) corresponding to an operating line given by, y = 5x + 0.001 is 2 1 0.56 1.56 2 1 0.56 1.56 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of absorption with exothermic reaction, for fluids having Pr = Sc; percentage change in heat and mass transfer flux will be the same for a given change in the degree of turbulence Both A & B Pr = Sc = 1; total mass, momentum and thermal diffusivity will be the same Pr = Sc ; there won Pr = Sc; percentage change in heat and mass transfer flux will be the same for a given change in the degree of turbulence Both A & B Pr = Sc = 1; total mass, momentum and thermal diffusivity will be the same Pr = Sc ; there won ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The equipment frequently used for adiabatic humidification-cooling operation with recirculating liquid is Natural draft cooling tower Spray chamber Induced draft cooling tower None of these Natural draft cooling tower Spray chamber Induced draft cooling tower None of these ANSWER DOWNLOAD EXAMIANS APP
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