Mass Transfer In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the Range is 15°F Both A & B Neither A nor B Approach is 10°F Range is 15°F Both A & B Neither A nor B Approach is 10°F ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following remains constant during sensible cooling process ? Specific humidity Partial pressure of vapour Specific humidity & Partial pressure of vapour None of the listed here Specific humidity Partial pressure of vapour Specific humidity & Partial pressure of vapour None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Inside the distillation column, the None of these Liquids are not always at their bubble points Driving force for the vapour flow is the pressure drop Pressure increases gradually from bottom to the top of the column None of these Liquids are not always at their bubble points Driving force for the vapour flow is the pressure drop Pressure increases gradually from bottom to the top of the column 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 The value of NA/(NA + NB), for steady state equimolal counter diffusion of two gases 'A' and 'B' is ∞ 0.5 2 1 ∞ 0.5 2 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin/yout).For 98% recovery of acetone, the number of trays required is/are 10 9 8 1 10 9 8 1 ANSWER DOWNLOAD EXAMIANS APP
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