A. Extractive
B. Azeotropic
C. Steam
D. Molecular
Related Mcqs:
- Alcohol is dehydrated using _______________________ distillation?
A. Extractive
B. Azeotropic
C. Steam
D. Molecular - Water-ethyl alcohol solution can be concentrated (in respect of alcohol concentration) by ________________ distillation?
A. Atmospheric
B. Vacuum
C. High pressure
D. None of these - 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 - Plate efficiency in a distillation column is reduced due to the ______________ of liquid?
A. Entrainment
B. Foaming
C. Weeping & dumping
D. All A., B. & C. - In case of ______________ distillation, a solvent is added to alter the relative volatility of the mixture to be separated?
A. Molecular
B. Azeotropic
C. Extractive
D. Flash - At what percentage (by volume) of alcohol composition, it forms an azeotrope with water ?
A. 90
B. 91.5
C. 95
D. 99 - Azeotropism for ethyl alcohol-water system disappears by_____________________?
A. Increasing temperature
B. Decreasing pressure
C. Increasing pressure
D. No means - Flash distillation is _______________________?
A. Same as differential distillation
B. Used for multi-component systems like crude refining
C. Same as simple distillation
D. Most useful for handling binary systems - The reason for preferring packed towers over plate towers in distillation practice is that the packed tower operation gives___________________?
A. Low pressure drop and high hold up
B. High pressure drop and low hold up
C. Low pressure drop and low hold up
D. High pressure drop and high hold up - When the feed to a distillation column is a saturated liquid, slope of the feed line is_____________________?
A. Zero
B. Unity
C. Infinity
D. None of these
