MCQOPTIONS
Saved Bookmarks
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. |
Differential media allows the growth of a certain type of organism and will inhibit the growth of certain microorganisms. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
The steam is injected into the system via a nozzle. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Which of the following is an advantage of continuous sterilization over batch sterilization? |
| A. | Solid matter can be used in media |
| B. | Reduction of fermenter corrosion |
| C. | Lower risk of contamination |
| D. | Easier control |
| Answer» C. Lower risk of contamination | |
| 4. |
Which of the following is the most preferable frequency for ultrasonic sterilization? |
| A. | 500 kHz |
| B. | 300 kHz |
| C. | 600 kHz |
| D. | 400 kHz |
| Answer» B. 300 kHz | |
| 5. |
Which of the following organism can grow with or without oxygen? |
| A. | Obligate aerobes |
| B. | Facultative anaerobes |
| C. | Obligate anaerobes |
| D. | Aerotolerant anaerobes |
| Answer» C. Obligate anaerobes | |
| 6. |
Which of the following wavelengths of radiation has the highest bacterial efficiency? |
| A. | 270 nm |
| B. | 280 nm |
| C. | 265 nm |
| D. | 290 nm |
| Answer» D. 290 nm | |
| 7. |
Which of the following is not an antimicrobial chemical agent? |
| A. | Cresol |
| B. | Formaldehyde |
| C. | Acetone |
| D. | Iodine |
| Answer» D. Iodine | |
| 8. |
Which of the following is not a method of sterilization? |
| A. | Radiation |
| B. | Chemical Treatment |
| C. | Ultrasonic treatment |
| D. | Cooling |
| Answer» E. | |
| 9. |
The fermenter vessel is sterilized at ____________ |
| A. | 20 psi |
| B. | 15 psi |
| C. | 5 psi |
| D. | 10 psi |
| Answer» C. 5 psi | |
| 10. |
Which of the following is the main disadvantage of a direct plate exchanger? |
| A. | Foaming occurs |
| B. | High capital cost |
| C. | If the media contains suspended solids, the plate may get blocked |
| D. | High maintenance |
| Answer» D. High maintenance | |
| 11. |
The sterilization in double spiral heat exchanger is done through ___________ |
| A. | Countercurrent mechanism |
| B. | Counter mechanism |
| C. | Symporter mechanism |
| D. | Antiporter mechanism |
| Answer» B. Counter mechanism | |
| 12. |
What is the function of the holding loop? |
| A. | It heats the medium |
| B. | It sterilizes the medium |
| C. | It holds the medium |
| D. | It cools the medium |
| Answer» C. It holds the medium | |
| 13. |
Which of the following is a type of continuous sterilizer? |
| A. | Steam Injector |
| B. | Inertial Impaction |
| C. | Electrostatic attraction |
| D. | Interception |
| Answer» B. Inertial Impaction | |
| 14. |
The holding time at 135 C will be _________ |
| A. | 2.44 minutes |
| B. | 51.9 seconds |
| C. | 18.9 seconds |
| D. | 2.7 seconds |
| Answer» C. 18.9 seconds | |
| 15. |
Which of the following time is not included in continuous sterilization? |
| A. | Heating time |
| B. | Cooling time |
| C. | Holding time |
| D. | Sterilization time |
| Answer» E. | |