MCQOPTIONS
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MCQOPTIONS
This section includes 10 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 advantages of coal-tar coatings? |
| A. | Excellent corrosion resistance to fresh and seawater |
| B. | Excellent corrosion resistant to fresh, seawater and soil immersion |
| C. | High abrasive resistance |
| D. | Stable coating |
| Answer» C. High abrasive resistance | |
| 2. |
Which of the following is/are the characteristics of primers or primary coatings? |
| A. | It contains rust-inhibitive pigments only |
| B. | Adequate wettability and short drying time |
| C. | Short drying time, adequate wettability and it contains rust-inhibitive pigments |
| D. | It contains rust-inhibitive pigments and short drying time |
| Answer» D. It contains rust-inhibitive pigments and short drying time | |
| 3. |
Which of the following paints are widely used for corrosion applications? |
| A. | Vinyl and epoxy paints |
| B. | Asphalts and bituminous paints |
| C. | Iron oxide and titanium oxide paints |
| D. | Alkyds and red lead |
| Answer» B. Asphalts and bituminous paints | |
| 4. |
Which of the following is/are the methods for surface preparation for coating application? |
| A. | Sandblasting and chipping |
| B. | Wire brushing and flame cleaning |
| C. | Sandblasting, chipping, wire brushing and flame cleaning |
| D. | Sandblasting, chipping and flame cleaning |
| Answer» D. Sandblasting, chipping and flame cleaning | |
| 5. |
What is the purpose of surface preparation? |
| A. | Surface roughening for mechanical bonding |
| B. | Removal of dirt, rust and mill scale |
| C. | Removal of welding flux and other impurities |
| D. | Surface roughening for mechanical bonding, removal of dirt, rust, mill scale, welding flux, and other impurities |
| Answer» E. | |
| 6. |
Which of the following is/are factors to consider for organic coatings? |
| A. | Surface preparation only |
| B. | Surface preparation and selection of primary coating |
| C. | Surface preparation and selection of primary and top coatings |
| D. | Selection of primary and top coatings |
| Answer» D. Selection of primary and top coatings | |
| 7. |
Which of the following is/are the examples of organic coatings? |
| A. | Paints |
| B. | Varnishes |
| C. | Lacquers |
| D. | Paints, varnishes and lacquers |
| Answer» E. | |
| 8. |
In general, coatings should not be used where the environment would rapidly attack the substrate material. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
Which of the following is/are the examples of chemical conversion? |
| A. | Bonderizing |
| B. | Parkerizing |
| C. | Chromatizing |
| D. | Bonderizing, parkerizing, and chromatizing |
| Answer» E. | |
| 10. |
What is meant by chemical conversion regarding coatings of a metal? |
| A. | Coating metal is vaporized electrically to deposit on the parts to be coated |
| B. | Coatings produced by corroding the metal surface to form an adherent protective layer |
| C. | Hot rolling of two metals together to produce composite sheet |
| D. | A metal wire or powder through the melting flame is blown onto the surface to be protected |
| Answer» C. Hot rolling of two metals together to produce composite sheet | |