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 metals will have the same crystal structure as that of the given figure? |
| A. | Zinc |
| B. | Nickel |
| C. | Titanium |
| D. | Zinc and titanium |
| Answer» C. Titanium | |
| 2. |
Which of the following metal/alloy has the highest stress-corrosion resistance? |
| A. | Aluminum |
| B. | Inconel |
| C. | Stainless steel |
| D. | Titanium |
| Answer» C. Stainless steel | |
| 3. |
Which of the following alloying element of stainless steel that attributes a large increase in stress-corrosion resistance? |
| A. | Nickel |
| B. | Chromium |
| C. | Carbon |
| D. | Nickel and chromium |
| Answer» B. Chromium | |
| 4. |
Which of the following corrosion products of lead serve as protective films? |
| A. | Lead sulfates |
| B. | Lead oxides |
| C. | Lead phosphates |
| D. | Sulfates, oxides, and phosphates of lead |
| Answer» E. | |
| 5. |
Which of the following metal is utilized in trucks, automobile engines, aircraft, and missiles? |
| A. | Stainless steel |
| B. | Carbon steels |
| C. | Magnesium |
| D. | Cast irons |
| Answer» D. Cast irons | |
| 6. |
Which of the following properties of aluminum contributing to its widespread applications? |
| A. | High corrosive resistance |
| B. | Good strength-weight ratio |
| C. | Nontoxic corrosion products |
| D. | High corrosive resistance, good strength-weight ratio, and nontoxic corrosion products |
| Answer» E. | |
| 7. |
Which of the following statements are correct regarding the austenite phase in an iron-carbon phase diagram? |
| A. | It is non-magnetic in nature |
| B. | The maximum percentage of carbon is 2.1% |
| C. | It has a face-centered cubic structure |
| D. | The austenitic phase has a face-centered cubic structure with a 2.1% maximum percent carbon and non-magnetic in nature. |
| Answer» E. | |
| 8. |
Which of the following is/are the classification types of stainless steel? |
| A. | Martensitic stainless steels |
| B. | Ferritic stainless steels |
| C. | Austenitic stainless steels |
| D. | Martensitic, ferritic and austenitic stainless steels |
| Answer» E. | |
| 9. |
Which of the following are the parameters of the iron-carbon diagram on the x and y-axis respectively? |
| A. | Carbon percentage and Iron percentage |
| B. | Carbon percentage and temperature |
| C. | Temperature and carbon percentage |
| D. | Iron percentage and temperature |
| Answer» C. Temperature and carbon percentage | |
| 10. |
Which of the following metal is/are regarded as pure iron commercially? |
| A. | Ingot iron |
| B. | Armco iron |
| C. | Wrought iron |
| D. | Ingot and Armco iron |
| Answer» E. | |
| 11. |
The excellent corrosion resistance of high-silicon irons is due to the formation of a passive SiO2 surface layer. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
What is the composition of high-silicon cast iron named Durichlor that has the highest corrosion resistance among cast irons? |
| A. | 14% silicon, 0.95% carbon and 3% molybdenum |
| B. | 10% silicon, 1% carbon and 3% molybdenum |
| C. | 14% silicon and 0.95% carbon |
| D. | 10% silicon and 1% carbon |
| Answer» B. 10% silicon, 1% carbon and 3% molybdenum | |
| 13. |
Which of the following is/are the types of cast irons? |
| A. | Gray cast iron |
| B. | Malleable cast iron |
| C. | Nodular cast iron |
| D. | Gray cast iron, malleable cast iron, and nodular cast iron |
| Answer» E. | |
| 14. |
Which of the following is not a mechanical property of a metal? |
| A. | Impact strength |
| B. | Creep strength |
| C. | Modulus of elasticity |
| D. | Stress-rupture |
| Answer» D. Stress-rupture | |
| 15. |
Which of the following properties of metal is often required to consider by corrosion engineer? |
| A. | Physical properties |
| B. | Mechanical properties |
| C. | Chemical properties |
| D. | Physical, mechanical and chemical properties |
| Answer» E. | |