Related Questions

Polar organic compounds are normally used as separating agents for the azeotropic and extractive distillation. Which of the following is the most important factor to be considered for the choice of the separating agent for extractive distillation?
A Cost
B Availability
C Toxicity
D Selectivity
__________ is used as an 'entrainer' for the separation of acetic acid-water mixture by distillation.
A Furfural
B Benzol
C Butyl acetate
D Hexane
Azeotropic distillation is employed to separate
A Constant boiling mixture
B High boiling mixture
C Mixture with very high relative volatility
D Heat sensitive materials
If the amount of the steam used in steam distillation is increased, the temperature of distillation
A Increases
B Decreases
C Remains unchanged
D Depends on relative volatility
Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about __________ mm Hg (absolute).
A 5-10
B 30-80
C 150-250
D 350-400
The number of degree of freedom for an azeotropic mixture of ethanol and water in vapour-liquid equilibrium, is
A 3
B 1
C 2
D 0
The equilibrium liquid composition compared to the vapor composition in case of azeotropic mixture is
A More
B Less
C Same
D Either more or less; depends on the system
The relative volatility of a binary mixture at the azeotropic composition is
A 1
B > 1
C 0
D ∞
A binary liquid azeotropic mixture has boiling point higher than either of the components, when it shows __________ deviation from Raoult's Law.
A Positive
B Negative
C No
D None of these
A binary liquid azeotropic mixture has boiling point lower than either of the components, when it shows __________ deviation from Raoult's Law.
A Positive
B Negative
C No
D None of these

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