MCQOPTIONS
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MCQOPTIONS
This section includes 9 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 alloys exhibits intergranular corrosion by steam and marine atmospheres? |
| A. | Die-cast zinc alloy |
| B. | Duralumin alloy (Al-Cu) |
| C. | Both die-cast zinc alloy and duralumin alloy |
| D. | Neither die-cast zinc alloy nor duralumin alloy |
| Answer» B. Duralumin alloy (Al-Cu) | |
| 2. |
Which of the following is the best remedy for the Knife-Line attack? |
| A. | Heating the welded stabilized steel in the range of 950 F to 1400 F |
| B. | Heating the welded stabilized steel in the range of 1400 F to 1900 F |
| C. | Heating the welded stabilized steel to 1950 F |
| D. | Heating the welded stabilized steel in the range of 1950 F to 2500 F |
| Answer» D. Heating the welded stabilized steel in the range of 1950 F to 2500 F | |
| 3. |
Which of the following is/are the characteristics of the Knife-line attack? |
| A. | KLA occurs immediately adjacent to the weld |
| B. | KLA occurs in the stabilized steels only |
| C. | KLA occurs in the non-stabilized steels only |
| D. | KLA occurs in the stabilized steels and it occurs immediately adjacent to the weld |
| Answer» E. | |
| 4. |
What is the abbreviation of KLA regarding intergranular corrosion? |
| A. | Knife-Line Attack |
| B. | Knight-Line Attack |
| C. | Knife-Life Action |
| D. | Knight-Life Action |
| Answer» B. Knight-Line Attack | |
| 5. |
The intergranular attack is evident in the resin shell casting but not on the ceramic mold casting. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Carbon pickup during the production of austenitic stainless steels has caused premature failures of intergranular corrosion. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Which of the following is/are the stabilizing elements to minimize intergranular corrosion of stainless steel? |
| A. | Niobium |
| B. | Columbium |
| C. | Titanium |
| D. | Niobium, columbium, and titanium |
| Answer» E. | |
| 8. |
Which of the following temperature range is required for commercial solution-quenching treatment? |
| A. | 200 F-500 F |
| B. | 800 F-1200 F |
| C. | 1300 F-1700 F |
| D. | 1950 F-2050 F |
| Answer» E. | |
| 9. |
Which of the following is/are the methods to control intergranular corrosion of austenitic stainless steel? |
| A. | Employing solution-quenching |
| B. | Adding stabilizers |
| C. | Lowering the carbon content to below 0.03% |
| D. | Employing solution-quenching, adding stabilizers and lowering the carbon content to below 0.03% |
| Answer» E. | |