MCQOPTIONS
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MCQOPTIONS
This section includes 12 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 is/are the preventions for the growth of mold on metal surfaces? |
| A. | Periodic cleaning and storing in the high humid atmosphere |
| B. | Periodic cleaning, reducing relative humidity during storage and applying toxic organic agents |
| C. | Reducing relative humidity during storage and applying toxic organic agents |
| D. | Periodic cleaning and reducing relative humidity during storage |
| Answer» C. Reducing relative humidity during storage and applying toxic organic agents | |
| 2. |
Which of the following materials is/are usually attacked by fungus? |
| A. | leathers |
| B. | Rubbers |
| C. | Leathers, rubbers and bare and coated metals |
| D. | Bare and coated metals |
| Answer» D. Bare and coated metals | |
| 3. |
Which of the following acids are produced by microorganisms such as fungus and mold? |
| A. | Oxalic acid |
| B. | Lactic acid |
| C. | Acetic acid |
| D. | Oxalic acid, lactic acid, acetic acid, and citric acid |
| Answer» E. | |
| 4. |
Which of the following is/are the preventions of microbiological corrosion in soil? |
| A. | Use of substitute materials |
| B. | Use of inhibitors |
| C. | Applying coatings, use of inhibitors, cathodic protection and substitute materials |
| D. | Cathodic protection |
| Answer» D. Cathodic protection | |
| 5. |
Which of the following coatings is/are used for the prevention of microbiological corrosion in buried steel? |
| A. | Asphalt |
| B. | Enamel |
| C. | Plastic tape |
| D. | Asphalt, enamel and plastic tape |
| Answer» E. | |
| 6. |
Thiobacillusthiooxidans are the type of aerobic bacteria that are capable of oxidizing sulfur-bearing compounds to sulfuric acid. |
| A. | False |
| B. | True |
| Answer» C. | |
| 7. |
Which of the following anaerobic bacteria that influence the corrosion behavior of buried steel structures? |
| A. | Sulfur-reducing bacteria |
| B. | Sulfur-oxidizing bacteria |
| C. | Thiobacillus thiooxidans |
| D. | Sulfur-reducing and sulfur-oxidizing bacteria |
| Answer» B. Sulfur-oxidizing bacteria | |
| 8. |
Which of the following organisms are regarded as microorganisms? |
| A. | Bacteria |
| B. | Fungi |
| C. | Protozoa |
| D. | Bacteria, fungi, protozoa, and nematodes |
| Answer» E. | |
| 9. |
Which of the following component is taken into account to classify aerobic and anaerobic organisms? |
| A. | Nitrogen |
| B. | Oxygen |
| C. | Argon |
| D. | Phosphorus |
| Answer» C. Argon | |
| 10. |
Which of the following is/are the processes that affect the corrosion behavior of metals by biological activity? |
| A. | By influencing anodic and cathodic reactions |
| B. | By influencing protective surface films |
| C. | By producing deposits, by influencing anodic, cathodic reactions and protective surface films |
| D. | By creating non-corrosive conditions |
| Answer» D. By creating non-corrosive conditions | |
| 11. |
Which of the following environments in which the biological activity may influence corrosion? |
| A. | Soil |
| B. | Fresh and seawater |
| C. | Petroleum products |
| D. | Soil, freshwater, seawater and petroleum products |
| Answer» E. | |
| 12. |
Biological corrosion is a deterioration of a metal by the corrosion process that occurs directly or indirectly due to the activity of living organisms. |
| A. | True |
| B. | False |
| Answer» B. False | |