Mass Transfer The drying time between fixed moisture contents within the 'constant rate period' is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid ) √T T1.5 T3 T √T T1.5 T3 T ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If a₁ and a₂ are the relative volatilities when the pressure in the distillation column is 1 and 2 atm respectively. Pick out the correct statement. a₁ = 2a₂ a₁ = 0.5 a₂ a₁ = a₂ None of these a₁ = 2a₂ a₁ = 0.5 a₂ a₁ = a₂ None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following equipments is not used for gas dispersion? Agitated vessels Perforated sieve tray towers Bubble cap tray towers Spray towers Agitated vessels Perforated sieve tray towers Bubble cap tray towers Spray towers ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If the solubilities of different components (in a liquid-liquid extraction system) increase with rise in temperature, then the temperature above which they dissolve completely is known as the critical solution temperature (CST or consolute temperature). If solubilities increase with decrease in temperature, then CST is the temperature below which they dissolve completely. If a binary system has no critical solution temperature, it implies that The system comprises of partially mis-cible liquids The system comprises of an azeotrope On heating, a vapor phase will appear ; while on cooling, a solid phase will appear The system comprises of miscible liquids The system comprises of partially mis-cible liquids The system comprises of an azeotrope On heating, a vapor phase will appear ; while on cooling, a solid phase will appear The system comprises of miscible liquids ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following remains constant during sensible cooling process ? Specific humidity & Partial pressure of vapour Specific humidity None of the listed here Partial pressure of vapour Specific humidity & Partial pressure of vapour Specific humidity None of the listed here Partial pressure of vapour ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Schimdt number and Lewis number for pure air at atmospheric conditions are respectively 0 and ≈ 1 < 1 and ≈ 1 >1 and ≈ 1 1 and 0 0 and ≈ 1 < 1 and ≈ 1 >1 and ≈ 1 1 and 0 ANSWER DOWNLOAD EXAMIANS APP
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