A. Water-hydrochloric acid
B. Acetone-carbon disulphide
C. Water-ethyl alcohol
D. n-heptane-n-octane
Related Mcqs:
- Pick out the system with minimum boiling azeotrope at 1 atm ?
A. Benzene-toluene
B. Ethyl alcohol-water
C. Hydrochloric acid-water
D. All A., B. and C. - A minimum boiling azeotrope is exemplified by__________________________?
A. Toluene-benzene
B. Acetone-carbon disulphide
C. Water-isobutyl alcohol
D. None of these - The boiling points of pure components of a binary system ________________ with increase in total pressure of the system ?
A. Decreases
B. Increases
C. Remains unchanged
D. May increase or decrease, depends on the system - Components, having widely different boiling point in a binary mixture, can be separated using ________________ distillation?
A. Molecular
B. Extractive
C. Steam
D. Simple - Which of the following mixtures does not form an azeotrope at atmospheric pressure ?
A. Water-alcohol
B. Methyl alcohol-acetone
C. Butyl acetate-water
D. None of these - At what percentage (by volume) of alcohol composition, it forms an azeotrope with water ?
A. 90
B. 91.5
C. 95
D. 99 - If the solubilities of different components (in a liquid-liquid extraction system) increase with rise in temperature, then the temperature above which they dissolve completely is known as the critical solution temperature (CST or consolute temperature). If solubilities increase with decrease in temperature, then CST is the temperature below which they dissolve completely. If a binary system has no critical solution temperature, it implies that___________________?
A. The system comprises of partially miscible liquids
B. The system comprises of miscible liquids
C. The system comprises of an azeotrope
D. On heating, a vapor phase will appear; while on cooling, a solid phase will appear - In a binary system, separation is very efficient, when the relative volatility is_______________?
A. 1
B. > 1
C. < 1
D. 0.5 - The-relative volatility for separation of a non-ideal binary mixture by distillation should be ___________________?
A. 0
B. 1
C. > 1
D. < 1 - The binary diffusivity in gases does not depend upon the ___________________?
A. Pressure
B. Temperature
C. Nature of the components
D. None of these
