MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Poorly oxygenated part becomes cathode whereas well oxygenated part becomes anode in the differential aeration corrosion. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Which of the following does not promote the differential aeration corrosion? |
| A. | Accumulation of dirt |
| B. | Partially covering metals |
| C. | Wire fence kind of structures |
| D. | Accumulation of oxygen |
| Answer» E. | |
| 3. |
Concentration cell corrosion occurs when a metallic surface is partially immersed in an electrolyte and partially exposed to air. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Rusting of iron in neutral aqueous solution of electrolyte occurs in the presence of oxygen with the evolution of ___________ |
| A. | Nitrogen |
| B. | Chloride |
| C. | Sulphide |
| D. | Hydrogen |
| Answer» E. | |
| 5. |
Which type of reaction occurs in anodic areas? |
| A. | Oxidation |
| B. | Reduction |
| C. | Displacement |
| D. | Addition |
| Answer» B. Reduction | |
| 6. |
In wet corrosion _________________ are formed at the cathodic areas. |
| A. | Organic compounds |
| B. | Metallic ions |
| C. | Non-metallic ions |
| D. | Inorganic compounds |
| Answer» D. Inorganic compounds | |