MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Fermentation Technology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The Del factor increases with an increase in the size of the fermenter. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
How long does it take for the autoclave to complete its cycle? |
| A. | 30-35 minutes |
| B. | 50 min to 1 hr |
| C. | 15-20 minutes |
| D. | 10-15 minutes |
| Answer» D. 10-15 minutes | |
| 3. |
The Del Factor decreases as the initial number of organisms _____________ |
| A. | Decreases |
| B. | Increases |
| C. | Remains constant |
| D. | Becomes zero |
| Answer» B. Increases | |
| 4. |
The equation for Del factor is _____________ |
| A. | = ln (N<sub>0</sub>/N<sub>t</sub>) |
| B. | = ln (N<sub>t</sub>/N<sub>0</sub>) |
| C. | = ln (N<sub>0</sub>) |
| D. | = ln (N<sub>0</sub>N<sub>t</sub>) |
| Answer» B. = ln (N<sub>t</sub>/N<sub>0</sub>) | |
| 5. |
What is the advantage of batch sterilization over continuous sterilization? |
| A. | Superior maintenance of medium quality |
| B. | Ease of scale-up |
| C. | Automatic control |
| D. | Lower equipment costs |
| Answer» E. | |
| 6. |
Which scientists introduced the term Del factor ? |
| A. | Deindoerfer and Humphrey |
| B. | Jacob and Monod |
| C. | Banks and Corbett |
| D. | Richards |
| Answer» B. Jacob and Monod | |
| 7. |
The long exposure of batch sterilization may lead to ____________ |
| A. | Purification of media |
| B. | Recovery of media |
| C. | Degradation |
| D. | Good quality of product |
| Answer» D. Good quality of product | |
| 8. |
Which of the following reaction occurs during the sterilization which results in browning of media? |
| A. | Sandmeyer reaction |
| B. | Maillard reaction |
| C. | Cannizzaro reaction |
| D. | Gattermann reaction |
| Answer» C. Cannizzaro reaction | |
| 9. |
If the foreign microorganism invades the fermentation, which of the following is not likely to occur? |
| A. | The medium will not allow the growth of contaminant |
| B. | The contaminant may outgrow the production organism |
| C. | The contaminant may contaminate the final product |
| D. | The contaminant may degrade the final product |
| Answer» B. The contaminant may outgrow the production organism | |
| 10. |
The contamination can be avoided by sterilizing the fermenter vessels only. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
The destruction of microorganisms by moist heat is described by ______________ |
| A. | Zero-order reaction |
| B. | First-order reaction |
| C. | Third-order reaction |
| D. | Second-order reaction |
| Answer» C. Third-order reaction | |
| 12. |
The highest feasible temperature for batch sterilization is ________ |
| A. | 124 C |
| B. | 120 C |
| C. | 122 C |
| D. | 121 C |
| Answer» E. | |
| 13. |
Which of the following instrument works on the principle of batch sterilization? |
| A. | Incubator |
| B. | Autoclave |
| C. | Centrifuge |
| D. | LAF |
| Answer» C. Centrifuge | |
| 14. |
What do you mean by sterilization? |
| A. | Purification of products |
| B. | Recovery of products |
| C. | Elimination of contamination |
| D. | Formulation of media |
| Answer» D. Formulation of media | |
| 15. |
Which of the following is not a type of sterilization? |
| A. | Batch |
| B. | Continuous |
| C. | Filter |
| D. | Submerged |
| Answer» E. | |