MCQOPTIONS
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MCQOPTIONS
This section includes 8 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 are the types of polarization? |
| A. | Activation polarization |
| B. | Activation and Concentration polarization |
| C. | Resistance polarization |
| D. | Activation, Concentration and Resistance polarization |
| Answer» E. | |
| 2. |
Which of the following parameter of electrolyte decreases the corrosion rate? |
| A. | Dissolved oxygen |
| B. | Temperature |
| C. | High electrical resistance |
| D. | Presence of ferric ions |
| Answer» D. Presence of ferric ions | |
| 3. |
Oxygenated acids are more corrosive than oxygen-free acids. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
More than one anodic and cathodic reactions are possible in corrosion. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Which of the following are the types of chemical reactions? |
| A. | Combination and Decomposition reactions |
| B. | Combination and Single displacement |
| C. | Single and Double displacement reaction |
| D. | Combination, Decomposition, Single displacement and double displacement |
| Answer» E. | |
| 6. |
Which of the following is more stable form of iron in an oxygenated solution? |
| A. | Fe<sub>2</sub>O<sub>3</sub> |
| B. | Fe(OH)<sub>2</sub> |
| C. | 2Fe(OH)<sub>3</sub> |
| D. | Fe<sub>3</sub>O<sub>4</sub> |
| Answer» D. Fe<sub>3</sub>O<sub>4</sub> | |
| 7. |
Which of the following reactions occurs when iron is immersed in (oxygenated) sea water? |
| A. | Fe==>Fe<sup>+2</sup>+2e, 2H<sup>+</sup>+2e==>H<sub>2</sub> |
| B. | Fe==>Fe<sup>+2</sup>+2e, O<sub>2</sub>+2H<sub>2</sub>O+4e==>4OH<sup> </sup> |
| C. | Fe<sup>+2</sup>+2e==>Fe<sup>+2</sup>, 4H<sup>+</sup>+O<sub>2</sub>+4e==>2H<sub>2</sub>O |
| D. | Fe<sup>+2</sup>+2e==>Fe<sup>+2</sup>, 2H<sup>+</sup>+2e==>H<sub>2</sub> |
| Answer» C. Fe<sup>+2</sup>+2e==>Fe<sup>+2</sup>, 4H<sup>+</sup>+O<sub>2</sub>+4e==>2H<sub>2</sub>O | |
| 8. |
Which of the following products are obtained when a zinc metal is dipped in dilute HCl solution? |
| A. | H<sub>2</sub>, ZnCl<sub>2</sub> |
| B. | Cl<sub>2</sub>, ZnH<sub>2</sub> |
| C. | H<sub>2</sub>, Cl<sub>2</sub> and ZnH<sub>2</sub> |
| D. | Zn, H<sub>2</sub> and Cl<sub>2</sub> |
| Answer» B. Cl<sub>2</sub>, ZnH<sub>2</sub> | |