MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Corrosion Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following type of corrosion is depicted in the given figure? |
| A. | Crevice corrosion |
| B. | Galvanic corrosion |
| C. | Filiform corrosion |
| D. | Uniform corrosion |
| Answer» D. Uniform corrosion | |
| 2. |
What are the preventions of filiform corrosion? |
| A. | Use of coatings with low water permeability |
| B. | To store in low-humidity environment |
| C. | To store in high-humidity environment |
| D. | Use of coatings with low water permeability and to store in a low-humidity environment |
| Answer» E. | |
| 3. |
Which of the following is the most environmental factor of filiform corrosion? |
| A. | Relative humidity of the atmosphere |
| B. | Temperature |
| C. | pH of the environment |
| D. | Temperature and pH of the environment |
| Answer» B. Temperature | |
| 4. |
Which of the following type of corrosion filament interaction is depicted in the given figure? |
| A. | Reflection of corrosion filament |
| B. | Splitting of corrosion filament |
| C. | Joining of corrosion filament |
| D. | Death trap of corrosion filament |
| Answer» E. | |
| 5. |
Which of the following ion/ions that result in the blue-green color of the active head in a corrosion filament? |
| A. | Ferrous ions |
| B. | Ferric oxide ions |
| C. | Hydrated ferric oxide ions |
| D. | Ferric oxide and hydrated ferric oxide ions |
| Answer» B. Ferric oxide ions | |
| 6. |
Which of the following industry has major concern on filiform corrosion? |
| A. | Petroleum industry |
| B. | Canning industry |
| C. | Automobile industry |
| D. | Petroleum and automobile industry |
| Answer» C. Automobile industry | |
| 7. |
Which of the following is/are the effects of filiform corrosion? |
| A. | Weakens the metal |
| B. | Decreases tensile strength |
| C. | Affects surface appearance |
| D. | Weakens the metal, decreases tensile strength and affects the surface appearance |
| Answer» D. Weakens the metal, decreases tensile strength and affects the surface appearance | |
| 8. |
Which of the following is also known as under film corrosion? |
| A. | Crevice corrosion |
| B. | Filiform corrosion |
| C. | Galvanic corrosion |
| D. | Pitting corrosion |
| Answer» C. Galvanic corrosion | |
| 9. |
Which of the following is a non-absorbent gasket? |
| A. | Polyethylene |
| B. | Isoprene |
| C. | Teflon |
| D. | Polyethylene and isoprene |
| Answer» D. Polyethylene and isoprene | |
| 10. |
Which of the following are the methods and procedures to minimize crevice corrosion? |
| A. | Use of welded joints instead of riveted joints |
| B. | Avoid sharp edges and stagnant areas |
| C. | Removal of deposits frequently |
| D. | Use of welded joints instead of riveted joints, avoid sharp edges and stagnant areas and removal of deposits frequently |
| Answer» E. | |
| 11. |
The crevice corrosion index is an index is to assist the selection of materials for construction. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
The incubation period is the amount of time required to initiate crevice corrosion on a corrosive site. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
Which of the following corrosion testing describe the test for crevice corrosion? |
| A. | Occluded cell corrosion |
| B. | Galvanic effect |
| C. | Atmospheric exposure testing |
| D. | Kesternich chamber testing |
| Answer» B. Galvanic effect | |
| 14. |
Which of the following characteristics of active-passive metal will acquire optimize crevice corrosion resistance? |
| A. | A narrow active-passive transition |
| B. | A small critical current density |
| C. | An extended passive region |
| D. | A narrow active-passive transition, a small critical current density, and an extended passive region |
| Answer» E. | |