Mass Transfer During constant rate drying period, vaporisation rate per unit drying surface area Decreases with time Does not change with time Does not affect the moisture content of the wet solid Increases with time Decreases with time Does not change with time Does not affect the moisture content of the wet solid Increases with time ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Dimension of mass diffusivity is the same as that of Surface tension Pressure Dynamic viscosity Kinematic viscosity Surface tension Pressure Dynamic viscosity Kinematic viscosity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Bound moisture is that liquid which exerts an equilibrium vapor pressure __________ that of the pure liquid at the given temperature. Less than Equal to Either A or B; depends on the solid More than Less than Equal to Either A or B; depends on the solid More than ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Pore size of the molecular seive 5A is __________ mm. 0.05 50 0.5 5 0.05 50 0.5 5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Moisture content of a substance when at equilibrium with a given partial pressure of the vapour is called the __________ moisture. Equilibrium Bound Unbound Free Equilibrium Bound Unbound Free ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively.The humidity of air sample expressed as kg of water vapour/kg of dry air is 0.122 0.048 0.152 0.079 0.122 0.048 0.152 0.079 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS