Mass Transfer Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) as K ∝ D2 K ∝ D1.5 K ∝ √D K ∝ D K ∝ D2 K ∝ D1.5 K ∝ √D K ∝ D ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Solvent used in extractive distillation Forms a low boiling azeotrope Is of low volatility Does not alter the relative volatility of the original components Forms a high boiling azeotrope Forms a low boiling azeotrope Is of low volatility Does not alter the relative volatility of the original components Forms a high boiling azeotrope ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If a two phase system is in physical equilibrium; then it means that, the Total pressure throughout the liquid phase is equal to that throughout the vapor phase Temperature of the liquid phase is equal to that of the vapor phase All of these Escaping tendency of each component from the liquid phase to the vapor phase is exactly equal to that from vapor phase to liquid phase Total pressure throughout the liquid phase is equal to that throughout the vapor phase Temperature of the liquid phase is equal to that of the vapor phase All of these Escaping tendency of each component from the liquid phase to the vapor phase is exactly equal to that from vapor phase to liquid phase ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During constant rate drying period, vaporisation rate per unit drying surface area 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 Decreases with time ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer As complete saturation of an adsorbent is approached, the differential heat of adsrop-tion approaches None of these Zero Integral heat of adsorption That of normal condensation None of these Zero Integral heat of adsorption That of normal condensation ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant. Relative humidity Partial pressure of water vapor Wet bulb temperature None of these Relative humidity Partial pressure of water vapor Wet bulb temperature None of these ANSWER DOWNLOAD EXAMIANS APP
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