Chemical Engineering MCQs

6108 MCQs  (Page 164 of 611)

Relative volatility varies with the concentration of component for an ideal solution. The relative volatility of a binary mixture may be defined as the ratio of vapor pressure of component ‘A’ to that of component ‘B’, when_________________?
A. Only vapor phase follows raoult’s law
B. Only liquid phase obeys dalton’s law
C. Liquid phase obeys dalton’s law and vapor phase obeys raoult’s law
D. Vapor phase obeys dalton’s law and liquid phase obeys raoult’s law
For water-ethanol system, the minimum reflux ratio_____________________?
A. Is computed from the slope of the upper operating line that is tangent to the equilibrium curve
B. Is computed from the intercept of the operating line
C. Cannot be computed
D. Is the optimum reflux ratio