MCQOPTIONS
Saved Bookmarks
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 chemical is responsible for the stains on silver? |
| A. | Hydrogen peroxide |
| B. | Hydrogen sulfide |
| C. | Sulfur dioxide |
| D. | Sulfur trioxide |
| Answer» C. Sulfur dioxide | |
| 2. |
Which of the following are the limitations of the EMF series? |
| A. | Available for metals and alloys |
| B. | Limited to pure metals only |
| C. | Measured only at standard conditions |
| D. | Limited to pure metals and measured only at standard conditions |
| Answer» E. | |
| 3. |
Which of the following is an example of cathodic protection? |
| A. | Electroplating of steel |
| B. | Galvanization of steel |
| C. | Magnesium connected to steel pipes |
| D. | Electroplating of steel, galvanization of steel and magnesium connected to steel |
| Answer» E. | |
| 4. |
Which of the following principle is utilized in the concept of cathodic protection? |
| A. | Principle of galvanic corrosion |
| B. | Principle of crevice corrosion |
| C. | Principle of pitting corrosion |
| D. | Principle of selective leaching |
| Answer» B. Principle of crevice corrosion | |
| 5. |
Which of the following is/are the preventions of galvanic corrosion? |
| A. | Avoid the unfavorable area effect of a small anode and large cathode |
| B. | Select the close combination of metals in galvanic series |
| C. | Select the far combination of metals in galvanic series |
| D. | Avoid the unfavorable area effect of a small anode and large cathode and select the close combination of metals in galvanic series |
| Answer» E. | |
| 6. |
Define area effect regarding galvanic corrosion? |
| A. | cathodic area * anodic area |
| B. | anodic area/cathodic area |
| C. | cathodic area/anodic area |
| D. | cathodic area + anodic area |
| Answer» D. cathodic area + anodic area | |
| 7. |
Define the distance effect regarding galvanic corrosion? |
| A. | Corrosion occurs only at the junction of two metals |
| B. | Corrosion occurs only at the edges of two metals |
| C. | Corrosion decreases with increase in distance from the junction |
| D. | Corrosion increases with increase in distance from the junction |
| Answer» D. Corrosion increases with increase in distance from the junction | |
| 8. |
Corrosion is greater near the seashore than in a dry rural atmosphere. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
The reason for the noble nature of titanium is that it cathodically polarizes readily in seawater. |
| A. | False |
| B. | True |
| Answer» C. | |