Mass Transfer During the constant rate period of drying of a solid, Surface evaporation of unbound moisture occurs None of these Increasing the air temperature decreases the drying rate Increased air humidity decreases the rate of drying Surface evaporation of unbound moisture occurs None of these Increasing the air temperature decreases the drying rate Increased air humidity decreases the rate of drying ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer McCabe-Thiele method of binary distillation does not assume that the Heat of mixing is negligible None of these Sensible heat changes are negligible compared with latent heat changes Molar latent heats of all components are equal Heat of mixing is negligible None of these Sensible heat changes are negligible compared with latent heat changes Molar latent heats of all components are equal ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height. 30-40 90-100 44119 70-80 30-40 90-100 44119 70-80 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer H₂S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H₂S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in metres) corresponding to an operating line given by, y = 5x + 0.001 is 2 0.56 1.56 1 2 0.56 1.56 1 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 Decrease Increase Depend on saturated boiling point; may increase or decrease Remains same Decrease Increase Depend on saturated boiling point; may increase or decrease Remains same ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Absorption accompanied by heat evolution results in Decrease in equilibrium solubility None of these Increased capacity of the absorber Increase in equilibrium solubility Decrease in equilibrium solubility None of these Increased capacity of the absorber Increase in equilibrium solubility ANSWER DOWNLOAD EXAMIANS APP
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