MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Environmental Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Gelatin liquefying bacteria are helpful in the manufacturing of photographic films. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Which bacteria results in the corrosion of iron and steel pipes embedded in soil? |
| A. | Escherichia coli bacteria |
| B. | Bacterium coli bacteria |
| C. | Iron bacteria |
| D. | Sulphur bacteria |
| Answer» E. | |
| 3. |
If the acid and gas are formed in the multiple tube fermentation technique, the test is _____ |
| A. | Positive |
| B. | Continued |
| C. | Negative |
| D. | Discarded |
| Answer» B. Continued | |
| 4. |
Which of the following statement is/are correct regarding coliform bacteria?i. It is gram negativeii. It is rod shaped bacteriaiii. It is a harmless aerobic microorganism |
| A. | i, ii, iii |
| B. | ii, iii |
| C. | i, iii |
| D. | i, ii |
| Answer» B. ii, iii | |
| 5. |
WHICH_BACTERIA_RESULTS_IN_THE_CORROSION_OF_IRON_AND_STEEL_PIPES_EMBEDDED_IN_SOIL??$ |
| A. | Escherichia coli bacteria |
| B. | Bacterium coli bacteria |
| C. | Iron bacteria |
| D. | Sulphur bacteria |
| Answer» E. | |
| 6. |
Which bacteria cause the reddish brown deposits in the tank? |
| A. | Escherichia coli bacteria |
| B. | Bacterium coli bacteria |
| C. | Iron bacteria |
| D. | Sulphur bacteria |
| Answer» D. Sulphur bacteria | |
| 7. |
If the acid and gas are formed in the multiple tube fermentation technique, the test is ____? |
| A. | Positive |
| B. | Continued |
| C. | Negative |
| D. | Discarded |
| Answer» B. Continued | |
| 8. |
The number of bacterial colonies by Agar plate count test should not exceed ____ per ml for potable water. |
| A. | 1 |
| B. | 10 |
| C. | 100 |
| D. | 1000 |
| Answer» D. 1000 | |
| 9. |
Which of the following is the disease caused by bacterial infections? |
| A. | Amoebic dysentery |
| B. | Infectious hepatitis |
| C. | Typhoid fever |
| D. | Poliomyelitis |
| Answer» D. Poliomyelitis | |
| 10. |
What is the temperature at which MPN test is performed? |
| A. | 35<sup>o</sup>C |
| B. | 37 <sup>o</sup>C |
| C. | 40<sup>o</sup>C |
| D. | 45 <sup>o</sup>C |
| Answer» C. 40<sup>o</sup>C | |
| 11. |
Which of the following is a better test to identify Coliforms? |
| A. | Coliform index |
| B. | Multiple tube fermentation |
| C. | MPN test |
| D. | Membrane filter technique |
| Answer» E. | |
| 12. |
________ represents the bacterial density that is most likely to be present in water. |
| A. | BOD |
| B. | COD |
| C. | MPN |
| D. | Coliform index |
| Answer» D. Coliform index | |
| 13. |
Which type of bacteria has a rod shaped structure? |
| A. | Bacilli |
| B. | Cocci |
| C. | Spirilla |
| D. | Vibrio |
| Answer» B. Cocci | |