MCQOPTIONS
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MCQOPTIONS
This section includes 13 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 factors that affect the corrosion of composites? |
| A. | The corrosive specificity of an environment |
| B. | Galvanic effect |
| C. | Corrosive specificity of an environment and galvanic effect |
| D. | Neither the corrosive specificity of an environment nor the galvanic effect |
| Answer» D. Neither the corrosive specificity of an environment nor the galvanic effect | |
| 2. |
Metallic composites consist of a metallic matrix strengthened by metallic or nonmetallic fibers, filaments or whiskers. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
What is the abbreviation of BMG regarding the type of materials? |
| A. | Bulk metallic groups |
| B. | Bulk metallic glasses |
| C. | Body metallic glasses |
| D. | Body metallic groups |
| Answer» C. Body metallic glasses | |
| 4. |
What is the composition of aqua-regia that corrodes noble metals such as platinum, gold? |
| A. | 3 parts of nitric acid and 1 part of hydrochloric acid |
| B. | 3 parts of hydrochloric acid and 1 part of nitric acid |
| C. | 1 part of hydrofluoric acid and 3 part of hydrochloric acid |
| D. | 3 parts of hydrofluoric acid and 1 part of hydrochloric acid |
| Answer» C. 1 part of hydrofluoric acid and 3 part of hydrochloric acid | |
| 5. |
Which of the following metals are regarded as noble metals? |
| A. | Iridium |
| B. | Palladium |
| C. | Ruthenium |
| D. | Iridium, palladium, and ruthenium |
| Answer» E. | |
| 6. |
Which of the following metals that usually results in a porous and volatile oxide layer? |
| A. | Magnesium |
| B. | Molybdenum |
| C. | Sodium |
| D. | Magnesium, sodium, and molybdenum |
| Answer» E. | |
| 7. |
Which of the following metals are regarded as refractory metals? |
| A. | Niobium and tungsten |
| B. | Molybdenum only |
| C. | Niobium, molybdenum, and tungsten |
| D. | Tungsten and molybdenum only |
| Answer» D. Tungsten and molybdenum only | |
| 8. |
Which of the following characteristics of titanium that account for much of its application in corrosive services? |
| A. | Resistance to seawater and other chloride salt solutions |
| B. | Resistance to hypochlorite s and wet chlorine |
| C. | Resistance to fuming nitric acid |
| D. | Resistance to seawater, chloride salt solutions, hypochlorite s, wet chlorine and fuming nitric acid |
| Answer» E. | |
| 9. |
Which of the following metals has a Hexagonal closed packed structure? |
| A. | Cadmium |
| B. | Magnesium |
| C. | Zirconium |
| D. | Cadmium, magnesium, and zirconium |
| Answer» E. | |
| 10. |
Which of the following metals will depend on the oxide layer for their corrosion resistance? |
| A. | Titanium and stainless steels |
| B. | Titanium, stainless steels, and aluminum and its alloys |
| C. | Aluminum and its alloys |
| D. | Aluminum and its alloy and titanium |
| Answer» C. Aluminum and its alloys | |
| 11. |
Which of the following metal plating is used for high-strength steels in aircraft to improve resistance to corrosion fatigue? |
| A. | Cadmium |
| B. | Magnesium |
| C. | Zinc |
| D. | Lead |
| Answer» B. Magnesium | |
| 12. |
Which of the following metal is/are corrosion resistant to hydrofluoric acid? |
| A. | Hastelloy C |
| B. | Monel |
| C. | Hastelloy C and Monel |
| D. | Titanium |
| Answer» D. Titanium | |
| 13. |
Which of the following metals will act as sacrificial metals in cathodic production? |
| A. | Tin and zinc |
| B. | Zinc only |
| C. | Magnesium, zinc and magnesium |
| D. | Magnesium and tin |
| Answer» D. Magnesium and tin | |