MCQOPTIONS
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MCQOPTIONS
This section includes 15 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 element is the most beneficial alloying element in steel for resistance to sulfur compounds? |
| A. | Chromium |
| B. | Nickel |
| C. | Molybdenum |
| D. | Carbon |
| Answer» B. Nickel | |
| 2. |
Which of the following metals is/are usually used for heat exchanger tubes carrying water? |
| A. | Carbon steels |
| B. | Brass and cupronickels |
| C. | Arsenical admiralty metal |
| D. | Brass, cupronickels and arsenical admiralty metal |
| Answer» E. | |
| 3. |
Which of the following impurity that causes rapid intergranular stress corrosion cracking of sensitized austenitic stainless steels in refinery operations? |
| A. | Sodium chloride |
| B. | Naphthenic acid |
| C. | Hydrogen sulfide |
| D. | Carbon dioxide |
| Answer» C. Hydrogen sulfide | |
| 4. |
Which of the chemical is/are added for the removal of hydrogen sulfide and neutralization? |
| A. | Sodium hydroxide |
| B. | Lime |
| C. | Sodium hydroxide and lime |
| D. | Naphthenic acid |
| Answer» D. Naphthenic acid | |
| 5. |
Ammonia is used to control the pH of the water and to reduce chloride acidity in the process stream. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Which of the following is/are the desalting methods in the petroleum industry? |
| A. | Washing and settling |
| B. | Addition of chemicals such as sulfonates |
| C. | Centrifuging and filtering, washing and settling, the addition of chemicals such as sulfonates |
| D. | Centrifuging and filtering |
| Answer» D. Centrifuging and filtering | |
| 7. |
Water acts as an electrolyte and causes corrosion as it tends to hydrolyze chlorides and other materials to form an acidic environment. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Which of the following impurities that causes corrosion difficulties in refinery operations? |
| A. | Hydrogen sulfide and carbon dioxide |
| B. | Hydrogen sulfide, carbon dioxide, sulfuric acid, and sodium chloride |
| C. | Sodium carbonate and sodium silicate |
| D. | Hydrogen sulfide and sulfuric acid |
| Answer» C. Sodium carbonate and sodium silicate | |
| 9. |
Which of the following inhibitor has been effective for internal corrosion domestic fuel oil tanks? |
| A. | Alkaline sodium chromate |
| B. | Sodium silicate |
| C. | Ammonia |
| D. | Sodium carbonate |
| Answer» B. Sodium silicate | |
| 10. |
Which of the following prevention methods that are usually employed on a beam of offshore drilling? |
| A. | Paints and other organic coatings |
| B. | Cathodic protection with sacrificial anodes or impressed currents |
| C. | Adding inhibitors |
| D. | Adding inhibitors, paints and other organic coatings and cathodic protection |
| Answer» E. | |
| 11. |
Which of the following metals is/are used for petroleum well valves and wellhead parts? |
| A. | Straight chromium stainless steels and stellite |
| B. | Monel and copper-based alloys |
| C. | Monel, straight chromium steels, stellite, and copper-based alloys |
| D. | Monel and stellite |
| Answer» D. Monel and stellite | |
| 12. |
Which of the following is/are the neutralizers added to well to minimize corrosion? |
| A. | Ammonia and Sodium carbonate |
| B. | Ammonia, sodium carbonate, sodium hydroxide, and sodium silicate |
| C. | Ammonia and sodium silicate |
| D. | Sodium carbonate and sodium silicate |
| Answer» C. Ammonia and sodium silicate | |
| 13. |
How the corrosion characteristics of a well can be determined? |
| A. | Inspection of surface equipment |
| B. | Analysis of carbon dioxide and organic acid |
| C. | Tubing-caliper surveys |
| D. | Inspection of surface equipment, analysis of carbon dioxide, organic acid and tubing-caliper surveys |
| Answer» E. | |
| 14. |
Which of the following impurities is often present in oil and gas wells? |
| A. | Saline water |
| B. | Sulfides |
| C. | Saline water, sulfides and organic impurities such as ammonia |
| D. | Organic impurities such as ammonia |
| Answer» D. Organic impurities such as ammonia | |
| 15. |
Which of the following is/are the general areas of the petroleum industry that faces corrosion problems? |
| A. | Production unit |
| B. | Transportation and storage |
| C. | Refinery operations |
| D. | Production unit, transportation, storage, and refinery operations |
| Answer» E. | |