Discussion
Home ‣ Biochemical Engineering ‣ Fermentation Reactors See What Others Are Saying!
- Question
Pseudomonas aeruginosa has a maximum specific growth rate of 0.8 h-1 in a medium with glucose as a growth limiting substrate. To prevent wash out, the dilution rate must be set to
Options- A. greater than 0.8 h-1
- B. less than 0.8 h-1
- C. equal to 0.8 h-1
- D. 1.6 h-1
- Correct Answer
- less than 0.8 h-1
- 1. The function of a mechanical seal is to
Options- A. prevent contaminants entering the reactor
- B. prevent cells from leaving the reactor
- C. both (a) and (b)
- D. prevent air to enter Discuss
- 2. Which of the following physical method is used as germicidal in modern time for the treatment of drinking water?
Options- A. Chlorination
- B. Treating with potassium permagnate
- C. UV radiation
- D. Treating with bleaching powder Discuss
- 3. In the accelerated phase, cell starts to
Options- A. increase and the division rate increases to reach a maximum
- B. decrease and the division rate increases to reach a maximum
- C. increase and the division rate decreases to reach a maximum
- D. increase and the division rate increases to reach a minimum Discuss
- 4. Which of the following enzyme is responsible for causing vitamin B deficiency disease beriberi?
Options- A. Ascorbic acid oxidase
- B. Thiaminase
- C. Lipoxygenase
- D. None of these Discuss
- 5. A cylindrical reactor has a liquid volume of 100,000 litres. It has an aspect ratio the ratio of the channel height to width of 1:1. The height of the liquid in the reactor will be approximately:
Options- A. 1.0 m
- B. 3.0 m
- C. 5.0 m
- D. 7.0 m Discuss
- 6. Mixing profiles closest to plug flow are observed in
Options- A. continuous packed bed reactor
- B. stirred tank reactor with biomass recycles
- C. continuous fluidized bed bioreactor
- D. all of these Discuss
- 7. Conventional adsorption is a
Options- A. reversible process
- B. irreversible process
- C. either reversible or irreversible
- D. none of these Discuss
- 8. The active site of an enzyme remains
Options- A. at the center of globular proteins
- B. rigid and does not change shape
- C. complementary to the rest of the molecule
- D. none of the above Discuss
- 9. A fluid in which the viscosity decreases with increasing stirrer speed and mixing time, can be represented as
Options- A. newtonian fluid
- B. pseudoplastic, thixotropic fluid
- C. dilatant, rheopectic fluid
- D. dilatant, pseudoplastic fluid Discuss
- 10. The destruction of microorganisms by steam may be described as
Options- A. first order chemical reaction
- B. zero order chemical reaction
- C. second order chemical reaction
- D. none of these Discuss
More questions
Correct Answer: both (a) and (b)
Correct Answer: UV radiation
Correct Answer: increase and the division rate increases to reach a maximum
Correct Answer: Thiaminase
Correct Answer: 5.0 m
Correct Answer: continuous packed bed reactor
Correct Answer: reversible process
Correct Answer: none of the above
Correct Answer: pseudoplastic, thixotropic fluid
Correct Answer: first order chemical reaction
Comments
There are no comments.Programming
Copyright ©CuriousTab. All rights reserved.