Mass Transfer Operating velocity in a packed tower is usually __________ the flooding velocity. Equal to Half More than Twice Equal to Half More than Twice 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. 0.25 0.0025 1.25 2.5 0.25 0.0025 1.25 2.5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The individual mass transfer co-efficients (moles/m² . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ? Both liquid and gas side Gas side Liquid side Interfacial Both liquid and gas side Gas side Liquid side Interfacial ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following has the same dimension as mass diffusivity? Thermal diffusivity Both Momentum flux & Kinematic viscosity Kinematic viscosity Momentum flux Thermal diffusivity Both Momentum flux & Kinematic viscosity Kinematic viscosity Momentum flux ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For __________ drying, the effects of velocity, temperature and humidity of the gas and the thickness of the solid are the same. Constant rate Neither A nor B Unsaturated surface Both A & B Constant rate Neither A nor B Unsaturated surface Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer As the reflux ratio in a distillation coloumn is increased from the minimum, the Number of plates decreases very slowly first and then more and more rapidly Slope of the operating line in stripping section decreases Liquid flow increases while the vapor flow decreases for a system Total cost first decreases and then increases Number of plates decreases very slowly first and then more and more rapidly Slope of the operating line in stripping section decreases Liquid flow increases while the vapor flow decreases for a system Total cost first decreases and then increases ANSWER DOWNLOAD EXAMIANS APP
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