Mass Transfer Prandtl number for water at 20°C is about 7 150 0.7 70 7 150 0.7 70 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following is an undesirable characteristic for the solvent used in gas absorption? High gas solubility Low vapor pressure Low viscosity None of these High gas solubility Low vapor pressure Low viscosity None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If Rm is the minimum reflux ratio, the optimum reflux ratio may be around __________ Rm. 3 to 4 5 2.5 to 3 1.2 to 1.5 3 to 4 5 2.5 to 3 1.2 to 1.5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The surface renewal frequency in Danckwerts model of mass transfer is given by (KL: mass transfer co-efficient) KL/DA² KL².DA √(KL².DA) KL²/DA KL/DA² KL².DA √(KL².DA) KL²/DA ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In which of the following unit operations, the selectivity is an important parameter? Absorption Solvent extraction None of these Distillation Absorption Solvent extraction None of these Distillation ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of a desorber (stripper), the Temperature always increases Operating line always lies above the equilibrium curve Operating line always lies below the equilibrium curve Temperature remains unaffected Temperature always increases Operating line always lies above the equilibrium curve Operating line always lies below the equilibrium curve Temperature remains unaffected ANSWER DOWNLOAD EXAMIANS APP
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