Mass Transfer Molecular diffusivity of a liquid Is independent of temperature May increase or decrease with temperature Increases with temperature Decreases with temperature Is independent of temperature May increase or decrease with temperature Increases with temperature Decreases with temperature ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following is considered equivalent to one theoretical stage in Mc-Cabe Thiele's method? Both B and C Reboiler Partial condenser Total condenser Both B and C Reboiler Partial condenser Total condenser ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Penetration theory states that the mass transfer co-coefficient is equal to (where, De is diffusivity and 't' is time) (De/t)1/2 (De.t)1/2 (4De/t) (4De/πt)1/2 (De/t)1/2 (De.t)1/2 (4De/t) (4De/πt)1/2 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer As the reflux ratio in a distillation coloumn is increased from the minimum, the Liquid flow increases while the vapor flow decreases for a system Total cost first decreases and then increases Slope of the operating line in stripping section decreases Number of plates decreases very slowly first and then more and more rapidly Liquid flow increases while the vapor flow decreases for a system Total cost first decreases and then increases Slope of the operating line in stripping section decreases Number of plates decreases very slowly first and then more and more rapidly ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer 1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is 0.175 0.2 0.25 0.4 0.175 0.2 0.25 0.4 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer McCabe-Thiele method of binary distillation does not assume that the None of these Molar latent heats of all components are equal Heat of mixing is negligible Sensible heat changes are negligible compared with latent heat changes None of these Molar latent heats of all components are equal Heat of mixing is negligible Sensible heat changes are negligible compared with latent heat changes ANSWER DOWNLOAD EXAMIANS APP
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