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 metals/alloys are used for handling high-purity water in nuclear applications? |
| A. | Zirconium and its alloys |
| B. | Stainless steels |
| C. | Inconel and Incoloy |
| D. | Zirconium and its alloys, stainless steels, Inconel and Incoloy |
| Answer» E. | |
| 2. |
Which of the following types of corrosion has been seen in stainless steels in high purity water containing oxygen? |
| A. | Cracking of solution-quenched stainless steel only |
| B. | Intergranular attack and cracking of solution-quenched steel |
| C. | Intergranular attack only |
| D. | Neither intergranular corrosion nor cracking of solution-quenched steel |
| Answer» C. Intergranular attack only | |
| 3. |
Corrosion decreases with an increase in the purity of water. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Which of the following corrosion defects that affect the reliability of tubing? |
| A. | Selective weld metal attack |
| B. | Improper pickling and heat treatment |
| C. | Residual stresses, selective weld metal attack, improper pickling, and heat treatment |
| D. | Selective weld metal attack and residual stresses |
| Answer» D. Selective weld metal attack and residual stresses | |
| 5. |
Which of the following metals are widely used for handing freshwater? |
| A. | Cast iron |
| B. | Stainless steel |
| C. | Galvanized steel |
| D. | Cast iron, stainless steel, and galvanized steel |
| Answer» E. | |
| 6. |
Which of the following type of water is more corrosive? |
| A. | Hard water |
| B. | Hard and soft water |
| C. | Soft water |
| D. | High-purity water |
| Answer» D. High-purity water | |
| 7. |
Which of the following factors that affect the corrosivity in freshwater? |
| A. | Oxygen content |
| B. | Hardness |
| C. | Chloride content |
| D. | Oxygen content, hardness and chloride content |
| Answer» E. | |
| 8. |
Which of the following alloy has high cavitation resistance that usually used for ship propellers and pumps impellers in seawater? |
| A. | Titanium |
| B. | Stellite |
| C. | 17-7 Stainless steel |
| D. | Nickel aluminum bronze |
| Answer» C. 17-7 Stainless steel | |
| 9. |
Which of the following metals have high resistance to crevices in quiet seawater? |
| A. | Hastelloy C |
| B. | Titanium |
| C. | Hastelloy C and Titanium |
| D. | Nickel-copper alloy |
| Answer» D. Nickel-copper alloy | |
| 10. |
Which of the following impurities contaminates the brackish water due to tidal action in rivers and bays near the ocean? |
| A. | Chlorides |
| B. | Bromides |
| C. | Hydrides |
| D. | Metal oxides |
| Answer» B. Bromides | |
| 11. |
Corrosion by seawater at greater depth is usually decreased because of the lower temperature. |
| A. | False |
| B. | True |
| Answer» C. | |
| 12. |
Which of the following regions of the seacoast environment shows the effect of the pitting of metals and alloys? |
| A. | Quiet seawater |
| B. | High tide region |
| C. | Low tide region |
| D. | Splash region |
| Answer» B. High tide region | |
| 13. |
Which of the following is/are the factors that affect corrosion in seawater? |
| A. | Temperature and velocity |
| B. | Oxygen content and biological organisms |
| C. | Temperature, velocity, oxygen content and biological organisms |
| D. | Temperature, velocity and oxygen content |
| Answer» D. Temperature, velocity and oxygen content | |
| 14. |
Which of the following is/are true regarding seawater? |
| A. | It contains 3.4% salt |
| B. | It has a pH around 8 |
| C. | It is a good electrolyte with high electrical conductivity |
| D. | Seawater is a good electrolyte with high electrical conductivity with 3.4% salt and pH around 8 |
| Answer» E. | |