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 (4De/t) (De.t)1/2 (4De/πt)1/2 (De/t)1/2 (4De/t) (De.t)1/2 (4De/πt)1/2 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Molecular diffusivity of a liquid May increase or decrease with temperature Is independent of temperature Decreases with temperature Increases with temperature May increase or decrease with temperature Is independent of temperature Decreases with temperature Increases with temperature ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Unsaturated air (with dry bulb and wet bulb temperatures being 45°C and 25°C respectively) is passed through a water spray chamber maintained at 23°C. The air will be cooled and Humidified at constant wet bulb temperature None of these Dehumidified Humidified with wet bulb temperature decreasing Humidified at constant wet bulb temperature None of these Dehumidified Humidified with wet bulb temperature decreasing ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Steam distillation is used for separation of high boiling Volatile impurity from still higher boiling substances Substances from non-volatile impurities none of the listed here Both of the options given here Volatile impurity from still higher boiling substances Substances from non-volatile impurities none of the listed here Both of the options given here ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If moisture content of solid on dry basis is X, then the same on wet basis is (X + 1)/X X/(X + 1) (X - 1)/X X/(X - 1) (X + 1)/X X/(X + 1) (X - 1)/X X/(X - 1) ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The dimension of diffusivity is same as that of the Density Velocity head Kinematic viscosity Molal concentration Density Velocity head Kinematic viscosity Molal concentration ANSWER DOWNLOAD EXAMIANS APP
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