Equilibrium Operations MCQs : This section focuses on the "Equilibrium Operations". These Multiple Choice Questions (MCQs) should be practiced to improve the Equilibrium Operations skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
_____ gives the relationship between the concentration of gas entering stage n and concentration of liquid leaving stage n.
A. Equilibrium curve
B. Operating line
C. Equilibrium line
D. None of the mentioned
Question 2
Agitator vessels are taller than bubble columns.
A. TRUE
B. FALSE
Question 3
Ethanol-water mixture is a popular example of a mixture exhibiting the typical VLE curve.
A. TRUE
B. FALSE
Question 4
Extremely small packing is favorable for packed towers as the surface area increases.
A. TRUE
B. FALSE
Question 5
How does the solubility of carbon-di-oxide in coke increase when it is subjected to high pressure?
A. Interfacial area increases
B. Pressure drop decreases
C. It shifts the equilibrium to a higher side
D. All of the mentioned
Question 6
In re-fluxing, the re-flux ratio needs to a minimum.
A. TRUE
B. FALSE
Question 7
Out of the limited applications of distillation in the food industry, which of the following is an application?
A. Use in brewer industry
B. Use in solvent recovery industry
C. Use in steam distillation
D. All of the mentioned
Question 8
Raoult's law is when mole fraction approaches zero and Henry's law is applicable when concentration approaches zero.
A. TRUE
B. FALSE
Question 9
The feed line tells us that a particular feed A is at a sub-cooled liquid. Which of the following explains the above statement?
A. The liquid is at its boiling point
B. None of the mentioned
C. A liquid below its boiling temperature
D. The liquid is a mixture of boiling and some vapors
Question 10
This method is used in food processing for removal of bad odours from food.
A. Flash distillation
B. Steam distillation
C. Batch distillation
D. Gas adsorption
Question 11
To increase the solubility of carbon-di-oxide in coke, it is subjected to high pressure.
A. TRUE
B. FALSE
Question 12
When a system doesn't obey Raoult's law, the relative volatility is the ratio of the Henry's constants for the two systems.
A. TRUE
B. FALSE
Question 13
When there is a mixture of liquids present, the boiling point lies between the boiling points of both the components.
A. TRUE
B. FALSE
Question 14
Which of the following is a process/method to enhance the amount of pure distillate?
A. Rectification
B. Stripping
C. Re-fluxing
D. All of the mentioned
Question 15
Which of the following is true about an agitator vessel?
A. Small bubbles have a high interfacial area
B. Bubbles in an agitator vessel are small
C. Small bubbles have a lower rise velocity
D. All of the mentioned
Question 16
Which of the following statements is correct with respect to gas absorption?
A. Sufficient contact time plays an important role in absorption
B. Adequate contact area plays an important role in absorption
C. Contact time becomes irrelevant after equilibrium and only the interfacial area plays a crucial role
D. All of the mentioned