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Equilibrium Operations MCQ Questions & Answers

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

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

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Question 2

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

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Question 3

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

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Question 4

Raoult's law is when mole fraction approaches zero and Henry's law is applicable when concentration approaches zero.

A. TRUE
B. FALSE

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Question 5

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

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Question 6

In re-fluxing, the re-flux ratio needs to a minimum.

A. TRUE
B. FALSE

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Question 7

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

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Question 8

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

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Question 9

Ethanol-water mixture is a popular example of a mixture exhibiting the typical VLE curve.

A. TRUE
B. FALSE

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Question 10

Agitator vessels are taller than bubble columns.

A. TRUE
B. FALSE

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Question 11

Extremely small packing is favorable for packed towers as the surface area increases.

A. TRUE
B. FALSE

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Question 12

When there is a mixture of liquids present, the boiling point lies between the boiling points of both the components.

A. TRUE
B. FALSE

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Question 13

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

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Question 14

To increase the solubility of carbon-di-oxide in coke, it is subjected to high pressure.

A. TRUE
B. FALSE

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Question 15

_____ 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

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Question 16

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

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