Mass Transfer According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity) D2 D0.5 D 1/D D2 D0.5 D 1/D ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following increases during evaporative cooling process with recirculated water supply? Both B and C Partial pressure of vapour Wet bulb temperature Relative humidity Both B and C Partial pressure of vapour Wet bulb temperature Relative humidity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following provides maximum contact surface for a liquid-vapour system? Packed tower Bubble-cap plate column Wetted wall column Seive-plate column Packed tower Bubble-cap plate column Wetted wall column Seive-plate column ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following assumes constant molal vaporisation and overflow? Ponchan-Savarit method McCabe-Thiele method Enthalpy concentration method Plate absorption column Ponchan-Savarit method McCabe-Thiele method Enthalpy concentration method Plate absorption column ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because They are always equal under all circumstances Water has a high latent heat of evaporation Solubility of the components of air in water is very small Lewis number is close to unity They are always equal under all circumstances Water has a high latent heat of evaporation Solubility of the components of air in water is very small Lewis number is close to unity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following same diameter columns gives lowest pressure drop per unit height? Randomly packed column Packed column (stacked) Sieve-plate column Bubble-cap column Randomly packed column Packed column (stacked) Sieve-plate column Bubble-cap column ANSWER DOWNLOAD EXAMIANS APP
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