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 alloying elements are not recommended in the sulfuric acid environment? |
| A. | Chromium |
| B. | Nickel |
| C. | Molybdenum |
| D. | Nickel and molybdenum |
| Answer» D. Nickel and molybdenum | |
| 2. |
Which of the following is/are the applications of Duriron because of its corrosion resistance and inherent hardness? |
| A. | To manufacture pumps, valves, and fans |
| B. | To make heat exchangers |
| C. | Impressed–current anodes |
| D. | To manufacture pumps, valves, fans, heat exchangers and impressed-current anodes |
| Answer» E. | |
| 3. |
Lead is used extensively for sulfuric acid in the lower concentration ranges (<70%). |
| A. | False |
| B. | True |
| Answer» C. | |
| 4. |
Which of the following metal is not corrosion resistant to sulfuric acid? |
| A. | Grey cast iron |
| B. | Duriron |
| C. | Durimet 20 |
| D. | Lead |
| Answer» B. Duriron | |
| 5. |
Which of the following is/are the factors that affect the corrosion resistance of steel in concentrated sulfuric acid? |
| A. | High velocity |
| B. | Temperature of acid |
| C. | Aeration |
| D. | High velocity, temperature, and aeration |
| Answer» E. | |
| 6. |
Which of the following are the functions of the given graph on the x and y-axis respectively? |
| A. | Temperature and concentration of acid |
| B. | Corrosion rate and temperature |
| C. | The concentration of acid and temperature |
| D. | The concentration of acid and corrosion rate |
| Answer» D. The concentration of acid and corrosion rate | |
| 7. |
Which of the following concentration of sulfuric acid in which the corrosion rate of steel is minimum? |
| A. | Less than 30% |
| B. | Greater than 70% |
| C. | 30% – 70% |
| D. | above 110% |
| Answer» C. 30% – 70% | |
| 8. |
Which of the following statements is/are true regarding the contact process? |
| A. | Conversion of sulfur dioxide to sulfur trioxide takes place |
| B. | Vanadium oxide is used as a catalyst |
| C. | It accounts for 70% of the world’s production |
| D. | Conversion of sulfur dioxide to sulfur trioxide takes place in the presence of vanadium catalyst and it accounts for 70% world’s production |
| Answer» E. | |
| 9. |
Which of the following method is used to produce sulfuric acid? |
| A. | Contact process |
| B. | Ostwald process |
| C. | Solvay process |
| D. | Haber process |
| Answer» B. Ostwald process | |
| 10. |
What are the principal uses of sulfuric acid? |
| A. | Production of hydrochloric acid |
| B. | Manufacturing of dyes, fertilizers, and drugs |
| C. | Pickling of steels and other metals |
| D. | Production of hydrochloric acid, manufacturing of dyes, fertilizers and drugs and pickling of steels |
| Answer» E. | |
| 11. |
Which of the following acid is produced relatively higher than other acids? |
| A. | Nitric acid |
| B. | Sulfuric acid |
| C. | Phosphoric acid |
| D. | Hydrofluoric acid |
| Answer» C. Phosphoric acid | |
| 12. |
Which of the following is/are the examples of mineral acids? |
| A. | Sulfuric acid and nitric acid |
| B. | Hydrochloric acid and hydrofluoric acid |
| C. | Sulfuric, nitric, hydrochloric, hydrofluoric and phosphoric acid |
| D. | Sulfuric, nitric, hydrochloric and hydrofluoric acid |
| Answer» D. Sulfuric, nitric, hydrochloric and hydrofluoric acid | |