MCQOPTIONS
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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 is/are the cleaning methods after the exposure of specimen? |
| A. | Sandblasting |
| B. | Rubber-stopper |
| C. | Use of chemical and solvents |
| D. | Sandblasting, rubber-stopper and use of chemical and solvents |
| Answer» E. | |
| 2. |
What is liquid-line corrosion? |
| A. | Corrosion on the external surface of a fully-loaded water tank |
| B. | Corrosion at the interface of liquid and gases in a pipeline or tank |
| C. | Preferential corrosion of rivets over sheets in a storage container |
| D. | Corrosion on the external surface of a half-loaded storage tank |
| Answer» C. Preferential corrosion of rivets over sheets in a storage container | |
| 3. |
Which of the following metals are resistant to dissolved oxygen? |
| A. | Stainless steels |
| B. | Aluminum and its alloys |
| C. | Stainless steels, aluminum, and its alloys |
| D. | Cooper and its alloys |
| Answer» D. Cooper and its alloys | |
| 4. |
Which of the following metals is/are subjected to increased attack in the presence of oxygen? |
| A. | Aluminum and its alloys |
| B. | Copper and its alloys |
| C. | Cast iron and steel |
| D. | Copper and its alloys, cast iron and steels |
| Answer» E. | |
| 5. |
Which of the following is the formula to calculate the minimum testing time for a corrosion test? |
| A. | 2000/milli meters per year |
| B. | 2000/mils per year |
| C. | 1000/millimeters per year |
| D. | 1000/mils per year |
| Answer» C. 1000/millimeters per year | |
| 6. |
Which of the following methods is/are used for the surface preparation of a specimen? |
| A. | Polishing belts |
| B. | Emery papers |
| C. | Electrolytic polishing |
| D. | Polishing belts, emery papers, and electrolytic polishing |
| Answer» E. | |
| 7. |
A standard surface condition is also desirable and necessary to facilitate comparison with other results. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Which of the following specifications of the specimen is must increase the reliability of a corrosion test? |
| A. | Chemical composition |
| B. | Fabrication history |
| C. | Metallurgical history |
| D. | Chemical composition, fabrication history, and metallurgical history |
| Answer» E. | |
| 9. |
Which of the following statement is/are true regarding the Huey test? |
| A. | Boiling 65% nitric acid is used as a corrosive solution |
| B. | Used to evaluate the heat treatment of steels |
| C. | Used to evaluate the heat treatment of stainless steels |
| D. | Boiling 65% nitric acid is used as a corrosive solution and used to evaluate the heat treatment of stainless steels |
| Answer» E. | |
| 10. |
What is the purpose of the salt-spray test? |
| A. | To evaluate painted surfaces |
| B. | To evaluate electroplated parts |
| C. | To evaluate painted surfaces and electroplated parts |
| D. | Neither to evaluate painted surfaces nor to evaluate electroplated parts |
| Answer» D. Neither to evaluate painted surfaces nor to evaluate electroplated parts | |
| 11. |
Which of the following is/are the purpose of corrosion testings? |
| A. | Evaluation and selection of materials for a specific environment |
| B. | To know the effect on the corrosion of metals by addition of inhibitors |
| C. | To study the mechanism of corrosion |
| D. | Evaluation and selection of materials for a specific environment, to know the effect on the corrosion of metals by addition of inhibitors and to study the mechanism of corrosion |
| Answer» E. | |
| 12. |
Which of the following type of corrosion tests are usually best and more desirable? |
| A. | Laboratory testing |
| B. | Pilot-plant testing |
| C. | Both laboratory and pilot-plant testing |
| D. | Neither laboratory nor pilot-plant testing |
| Answer» C. Both laboratory and pilot-plant testing | |
| 13. |
Which of the following is/are the types of corrosion testing? |
| A. | Laboratory testing |
| B. | Pilot-plant testing |
| C. | Field testing |
| D. | Laboratory, pilot-plant and field testing |
| Answer» E. | |
| 14. |
Well-planned and executed tests usually result in reproducibility and reliability. |
| A. | True |
| B. | False |
| Answer» B. False | |