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 corrosion protective systems is/are included in aircraft industries? |
| A. | Anodizing, cladding and conversion coatings |
| B. | Anodizing and cathodic protection |
| C. | Conversion coatings and anodizing |
| D. | Cathodic protection only |
| Answer» B. Anodizing and cathodic protection | |
| 2. |
Which of the following is/are the primary materials regarding the construction of aircraft? |
| A. | Aluminum |
| B. | Magnesium and titanium |
| C. | Aluminum, magnesium, titanium, and iron |
| D. | Titanium and magnesium |
| Answer» D. Titanium and magnesium | |
| 3. |
Rusting of high-strength steel due to resident water can cause stress-corrosion and hydrogen embrittlement. |
| A. | False |
| B. | True |
| Answer» C. | |
| 4. |
Which of the following is/are the prime considerations in space vehicles and aircraft? |
| A. | High strength-weight ratios for materials and high ratios of payload to the vehicle s weight |
| B. | High strength-weight ratios for materials only |
| C. | High ratios of payload to vehicles weight only |
| D. | Neither high strength-weight ratios for materials nor high ratios of payload to the vehicle s weight |
| Answer» B. High strength-weight ratios for materials only | |
| 5. |
Which of the following materials is/are used for blast nozzles in aerospace? |
| A. | Aluminum oxide and cemented tungsten carbide |
| B. | Aluminum oxide cemented tungsten carbide and boron carbide |
| C. | Cemented tungsten carbide only |
| D. | Aluminum oxide and boron carbide |
| Answer» C. Cemented tungsten carbide only | |
| 6. |
Which of the following areas of aircrafts face severe corrosion problems? |
| A. | Fuel tank due to oxidizers and fuel |
| B. | High-temperature corrosion in blast nozzles |
| C. | The outer structure of the plane due to vacuum |
| D. | Fuel tank due to oxidizers and fuel, high-temperature corrosion in blast nozzles |
| Answer» E. | |
| 7. |
Which of the following type of corrosion is pre-dominate in underground corrosion? |
| A. | Aerobic corrosion |
| B. | Anaerobic corrosion |
| C. | Aerobic and anaerobic corrosion |
| D. | Neither aerobic nor anaerobic corrosion |
| Answer» D. Neither aerobic nor anaerobic corrosion | |
| 8. |
Which of the following is/are true regarding underground structures? |
| A. | Ordinary carbon steels and cast irons are commonly used |
| B. | Organic coatings can be used |
| C. | Cathodic protection is applied to protect it from corrosion |
| D. | Usually made of carbon steel and cast irons with or without organic coatings and supported by a cathodic protection system |
| Answer» E. | |
| 9. |
Which of the following type of corrosion is/are dominant due to backfills such as stones, cinders, wood, and metal? |
| A. | Crevice corrosion |
| B. | Pitting corrosion |
| C. | Crevice and pitting corrosion |
| D. | Neither crevice nor pitting corrosion |
| Answer» D. Neither crevice nor pitting corrosion | |
| 10. |
Which of the following is a good measure of corrosivity? |
| A. | Thermal conduction |
| B. | Electrical resistance |
| C. | Thermal resistance |
| D. | Mechanical properties |
| Answer» C. Thermal resistance | |
| 11. |
Which of the factors that affect the corrosiveness of soils? |
| A. | Moisture |
| B. | Acidity |
| C. | Oxygen |
| D. | Moisture, oxygen, acidity and stray currents |
| Answer» E. | |
| 12. |
The corrosivity of soils varies over a wide range because of the variety of composition. |
| A. | True |
| B. | False |
| Answer» B. False | |