Mass Transfer Stacked packing compared to dumped packing Gives higher pressure drop Both A & B Provides poorer contact between the fluids Gives lower pressure drop Gives higher pressure drop Both A & B Provides poorer contact between the fluids Gives lower pressure drop ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of constant underflow extraction operation, the __________ at all solute concentration. Ratio of the insoluble to solution is constant Both A & B Neither A nor B Solids are drained to the same extent Ratio of the insoluble to solution is constant Both A & B Neither A nor B Solids are drained to the same extent ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The rough value of diffusion co-efficient of water vapor into air at 25°C may be about __________ cm²/sec. 1.25 0.0025 0.25 2.5 1.25 0.0025 0.25 2.5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Humidity chart is useful for the solution of problems concerning condensation, vaporisation and air conditioning. At a given dry bulb temperature, value of humidity obtained from the humidity chart directly, is in terms of __________ humidity. None of these Relative Percentage Molal None of these Relative Percentage Molal 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 0.56 2 1.56 1 0.56 2 1.56 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The dew point of an unsaturated gas-vapor mixture does not depend upon the __________ of the mixture. Total pressure Composition All of these Temperature Total pressure Composition All of these Temperature ANSWER DOWNLOAD EXAMIANS APP
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