Mass Transfer The dimension of diffusivity is same as that of the Molal concentration Kinematic viscosity Density Velocity head Molal concentration Kinematic viscosity Density Velocity head ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will Increase Decrease Remains same Depend on saturated boiling point; may increase or decrease Increase Decrease Remains same Depend on saturated boiling point; may increase or decrease ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following assumes constant molal vaporisation and overflow? Plate absorption column Enthalpy concentration method Ponchan-Savarit method McCabe-Thiele method Plate absorption column Enthalpy concentration method Ponchan-Savarit method McCabe-Thiele method ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer With increase in the concentration of the adsorbate, the integral heat of adsorption May increase or decrease ; depends on the type of adsorbate Increases Remains unchanged Decreases May increase or decrease ; depends on the type of adsorbate Increases Remains unchanged Decreases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At equilibrium the concentration of water in vapour phase (C*)in kg/m³ of air space and the amount of water (m) adsorbed per kg of dry silica gel are related by, C* = 0.0667m. To maintain dry conditions in a room of air space 100m³ containing 2.2 kg of water vapour initially, 10 kg of dry silica gel is kept in the room. The fraction of initial water remaining in the air space after a long time (during which the temperature is maintained constant) is 1 0.2 0.4 1 0.2 0.4 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In a packed tower, the value of HETP equals HTUOG, when the equilibrium and the operating lines are (where, HETP = height equivalant to a theoretical plate HTUOG = overall gas phase height of a transfer unit) Both A & B Parallel Neither A nor B Straight Both A & B Parallel Neither A nor B Straight ANSWER DOWNLOAD EXAMIANS APP
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