Mass Transfer For the flow of gases through a capillary, with increase in temperature, the permeability __________ as per Knudsen law. Remains same Increases Decreases Either A or B; depends on the gas Remains same Increases Decreases Either A or B; depends on the gas ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Priming in a distillation column Results from very low gas velocity Is desirable from point efficiency consideration Is characterised by the presence of foam throughout the space between trays Reduces the overall pressure drop Results from very low gas velocity Is desirable from point efficiency consideration Is characterised by the presence of foam throughout the space between trays Reduces the overall pressure drop ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The main reason for dividing a tall packed tower into series of small towers is to Reduce liquid hold up Avoid flooding Avoid channeling Minimise the overall pressure drop Reduce liquid hold up Avoid flooding Avoid channeling Minimise the overall pressure drop ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Diffusivity in concentrated solutions differs from that in dilute solutions, because of the changes in Viscosity with concentration Neither A nor B Degree of ideality of the solution Both A & B Viscosity with concentration Neither A nor B Degree of ideality of the solution Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Fractional solvent extraction Results in low interfacial tension None of the listed here Employs only one solvent Employs two solvents Results in low interfacial tension None of the listed here Employs only one solvent Employs two solvents 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 Solubility of the components of air in water is very small Lewis number is close to unity Water has a high latent heat of evaporation They are always equal under all circumstances Solubility of the components of air in water is very small Lewis number is close to unity Water has a high latent heat of evaporation They are always equal under all circumstances ANSWER DOWNLOAD EXAMIANS APP
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