MCQOPTIONS
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MCQOPTIONS
This section includes 14 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. |
What are the advantages of corrosion? |
| A. | Protection of metals by surficial oxide layer |
| B. | Zn-carbon electrochemical reactions in the battery |
| C. | Decrease in the strength of material |
| D. | Protection of metals by the surficial oxide layer and Zn-carbon electrochemical reactions in the battery |
| Answer» E. | |
| 2. |
What is the reason for corrosion? |
| A. | Stability of a metal ion |
| B. | Stability of a metal atom |
| C. | Passivation |
| D. | Use of coatings |
| Answer» B. Stability of a metal atom | |
| 3. |
Which of the following are necessary in the process of corrosion? |
| A. | Anode |
| B. | Cathode |
| C. | Electrolyte |
| D. | Anode, Cathode and Electrolyte |
| Answer» E. | |
| 4. |
Corrosion involves _______ reactions. |
| A. | oxidation |
| B. | reduction |
| C. | displacement |
| D. | both oxidation and reduction |
| Answer» E. | |
| 5. |
Which of the following is considered as high corrosive resistant material? |
| A. | Mild steel |
| B. | Cast iron |
| C. | Zinc |
| D. | Stainless steel |
| Answer» E. | |
| 6. |
Deterioration of paint and rubber by sunlight or chemicals is not a corrosion. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Which of the following subjects are important in understanding and controlling corrosion? |
| A. | Thermodynamics |
| B. | Electrochemistry |
| C. | Both Thermodynamics and Electrochemistry |
| D. | Material Characterization |
| Answer» D. Material Characterization | |
| 8. |
Corrosion maintenance is vital in _____ industries. |
| A. | paper |
| B. | petroleum |
| C. | plastic toy |
| D. | both petroleum and paper |
| Answer» E. | |
| 9. |
Which of the following is an example of wet corrosion? |
| A. | Corrosion of metal in the water |
| B. | Corrosion of iron in the presence of anhydrous calcium chloride |
| C. | Corrosion of titanium in dry chlorine |
| D. | Corrosion due to furnace gases |
| Answer» B. Corrosion of iron in the presence of anhydrous calcium chloride | |
| 10. |
Corrosion of material by furnace gases is classified as _____ |
| A. | wet corrosion |
| B. | dry corrosion |
| C. | galvanic corrosion |
| D. | crevice corrosion |
| Answer» C. galvanic corrosion | |
| 11. |
Which of the following materials will undergo Corrosion? |
| A. | Metals only |
| B. | Metals and Non-metals |
| C. | Metals, Non-metals, Ceramics and Plastics |
| D. | Metals, Non-metals, Ceramics, Plastics and Rubbers |
| Answer» E. | |
| 12. |
The chemical formula of rust is ______ |
| A. | Fe<sub>1</sub>O |
| B. | Fe<sub>2</sub>O<sub>3</sub> |
| C. | Fe<sub>3</sub>O<sub>4</sub> |
| D. | Fe(OH)<sub>2</sub> |
| Answer» C. Fe<sub>3</sub>O<sub>4</sub> | |
| 13. |
Corrosion of metals is considered as the reverse of extractive metallurgy. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
What is Corrosion? |
| A. | Destruction or deterioration of a material |
| B. | Conversion of metal atoms to metallic ions |
| C. | Conversion of metal ions to metal atoms |
| D. | Destruction of materials involving in the conversion of metal atoms into metal ions |
| Answer» E. | |