Mass Transfer The rough value of diffusion co-efficient of water vapor into air at 25°C may be about __________ cm²/sec. 2.5 1.25 0.25 0.0025 2.5 1.25 0.25 0.0025 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For a binary mixture with low relative volatility, continuous rectification to get pure products will require Small cross-section column Low reflux ratio High reflux ratio Less number of trays Small cross-section column Low reflux ratio High reflux ratio Less number of trays ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In continuous distillation, the internal reflux ratio (Ri) and the external reflux ratio (Re) are related as Ri = Re/(1 - Re) Ri = (1 - Re)/Re Ri = Re Ri = Re/(1 + Re) Ri = Re/(1 - Re) Ri = (1 - Re)/Re Ri = Re Ri = Re/(1 + Re) ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer McCabe-Thiele method Can use any type of units Is more accurate than Ponchan-Savarit method Uses molal units for material and energy balance Uses weight fractions to express liquid and vapour composition Can use any type of units Is more accurate than Ponchan-Savarit method Uses molal units for material and energy balance Uses weight fractions to express liquid and vapour composition ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer When both the fluids flow concurrently in an absorber, the slope of the operating line is + ve 1 -1 - ve + ve 1 -1 - ve ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Stage efficiency in a leaching process depends on the Vapour pressure of the solution Rate of diffusion of the solute through the solid and into the liquid Both A & B Time of contact between the solid and the solution Vapour pressure of the solution Rate of diffusion of the solute through the solid and into the liquid Both A & B Time of contact between the solid and the solution ANSWER DOWNLOAD EXAMIANS APP
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