Mass Transfer Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) as K ∝ D1.5 K ∝ √D K ∝ D K ∝ D2 K ∝ D1.5 K ∝ √D K ∝ D K ∝ D2 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The drying time between fixed moisture content within diffusion controlled 'falling rate period' is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid ) √T T T² T³ √T T T² T³ ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The caking of crystals can be prevented by Maintaining low critical humidity Maintaining high critical humidity Both A and C Coating the product with inert material Maintaining low critical humidity Maintaining high critical humidity Both A and C Coating the product with inert material ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Pick out the system with minimum boiling azeotrope at 1 atm. Hydrochloric acid-water Ethyl alcohol-water Benzene-toluene All of these Hydrochloric acid-water Ethyl alcohol-water Benzene-toluene All of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of an absorber, the operating Line can be either above or below the equilibrium curve Velocity is more than the loading velocity Line always lies below the equilibrium curve Line always lies above the equilibrium curve Line can be either above or below the equilibrium curve Velocity is more than the loading velocity Line always lies below the equilibrium curve Line always lies above the equilibrium curve ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of these columns incurs the lowest pressure drop? Packed column (with dumped packing) Bubble plate column Packed column (with stacked packing) Pulse column Packed column (with dumped packing) Bubble plate column Packed column (with stacked packing) Pulse column ANSWER DOWNLOAD EXAMIANS APP
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