MCQOPTIONS
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MCQOPTIONS
This section includes 14 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 tall tubes are commonly used in the set of 15. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
The automated E.B.C. tube was developed in 1985. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Who developed the Multiferm ? |
| A. | Sigsgaard and Rasmussen |
| B. | Jacob and Monod |
| C. | Briggs et al. |
| D. | Skands |
| Answer» B. Jacob and Monod | |
| 4. |
The tall tubes are sterilized for minimum ____________ |
| A. | 20 min |
| B. | 30 min |
| C. | 10 min |
| D. | 40 min |
| Answer» C. 10 min | |
| 5. |
The number of ports in the lid of stirred vessel are _____________ |
| A. | One |
| B. | Three |
| C. | Five |
| D. | Seven |
| Answer» D. Seven | |
| 6. |
Which of the following is used to maintain the gas-tight seal in stirred fermenters? |
| A. | Silicone rubber |
| B. | Neoprene rubber |
| C. | EPDM rubber |
| D. | Buna-N rubber |
| Answer» B. Neoprene rubber | |
| 7. |
What is the capacity of stirred laboratory fermenter vessel? |
| A. | 4.0 L |
| B. | 1.0 L |
| C. | 2.5 L |
| D. | 3.0 L |
| Answer» D. 3.0 L | |
| 8. |
The air from hypovial is displaced by using _____________ |
| A. | Sterile water |
| B. | Sterile oxygen |
| C. | Sterile nitrogen |
| D. | Sterile hydrogen gas |
| Answer» D. Sterile hydrogen gas | |
| 9. |
Mini-fermenters are used to study _____________ |
| A. | The amount of oxygen evolved |
| B. | The effect of oxygen concentration on yeast fermentation |
| C. | The effect of carbon dioxide concentration on yeast |
| D. | The amount of carbon dioxide consumed |
| Answer» C. The effect of carbon dioxide concentration on yeast | |
| 10. |
Which of the following stirrer is used to mix the contents of hypovials? |
| A. | Electrical stirrer |
| B. | Magnetic stirrer |
| C. | Mechanical stirrer |
| D. | Automatic stirrer |
| Answer» C. Mechanical stirrer | |
| 11. |
The sterile filters in mini fermenters are made from _______________ |
| A. | Pasteur pipettes |
| B. | Graduated pipette |
| C. | Volumetric pipette |
| D. | Micropipette |
| Answer» B. Graduated pipette | |
| 12. |
The hypovials in the mini fermenter are fitted with ___________ |
| A. | Ethyl septa |
| B. | Propyl septa |
| C. | Pentyl septa |
| D. | Butyl septa |
| Answer» E. | |
| 13. |
The capacity of hypovials in mini fermenters is ____________ |
| A. | 120 ml |
| B. | 260 ml |
| C. | 150 ml |
| D. | 200 ml |
| Answer» B. 260 ml | |
| 14. |
Which of the following is not a type of laboratory scale fermenter? |
| A. | Mini fermenter |
| B. | Tower fermenter |
| C. | Stirred fermenter |
| D. | Tall tubes |
| Answer» C. Stirred fermenter | |