- 1. Corrosion engineering is a specialized field that focuses on understanding, preventing, and managing the deterioration of materials due to chemical or electrochemical reactions with their environment. This process can lead to the degradation of metals, alloys, ceramics, and polymers, resulting in structural damage and safety hazards. Corrosion engineers utilize various techniques such as material selection, coatings, inhibitors, and cathodic protection to mitigate the impact of corrosion and extend the lifespan of structures and equipment. By studying the underlying mechanisms of corrosion and applying practical solutions, corrosion engineers play a vital role in ensuring the integrity and reliability of infrastructure in industries such as oil and gas, aerospace, marine, and construction.
What is corrosion?
A) A mechanical process that strengthens materials.
B) An electrochemical process that extends material lifespan.
C) A chemical reaction between a material and its environment resulting in degradation of the material.
D) A physical reaction between two materials resulting in degradation.
- 2. Which metal is commonly used as a sacrificial anode to protect less noble metals from corrosion?
A) Titanium
B) Aluminum
C) Copper
D) Zinc
- 3. Which type of corrosion occurs when two dissimilar metals are in contact in the presence of an electrolyte?
A) Galvanic corrosion
B) Pitting corrosion
C) Crevice corrosion
D) Intergranular corrosion
- 4. What type of corrosion is characterized by localized damage on the metal surface through the formation of small pits?
A) Galvanic corrosion
B) Erosion corrosion
C) Pitting corrosion
D) Crevice corrosion
- 5. What is the purpose of a corrosion inhibitor?
A) To reduce or prevent corrosion of metals
B) To promote galvanic corrosion
C) To increase the electrical conductivity of metals
D) To accelerate the corrosion process
- 6. Which factor is most commonly used to measure the severity of corrosion in a given environment?
A) Metal's density
B) Electrical conductivity of the metal
C) Surface area of the metal
D) Corrosion rate
- 7. What is the principle behind using a corrosion coupon to monitor corrosion rates?
A) Subjecting the coupon to high temperatures to induce corrosion
B) Immersing the coupon in a strong acid to accelerate corrosion
C) Comparing the weight loss of the coupon over time to determine the rate of corrosion
D) Applying an electric current to the coupon to measure resistance
- 8. What can be an effective method to prevent corrosion in buried pipelines?
A) Increasing the pipeline diameter
B) Coating the pipeline with insulating material
C) Cathodic protection
D) Using less corrosion-resistant metals
- 9. What type of corrosion is observed as a gradual attack along the grain boundaries of a metal?
A) Uniform corrosion
B) Intergranular corrosion
C) Galvanic corrosion
D) Pitting corrosion
- 10. Which type of corrosion is localized damage to a metal surface at the contact zone between the metal and another substance?
A) Intergranular corrosion
B) Pitting corrosion
C) Contact corrosion
D) Uniform corrosion
- 11. What is the scientific principle behind the process of cathodic protection?
A) Sacrificial anode
B) Oxidative reaction
C) Electrolysis
D) Ionic bonding
- 12. What is the term for the penetration of hydrogen into a metal, making it prone to cracking?
A) Corrosion rate
B) Hydrogen embrittlement
C) Oxidation
D) Intergranular attack
- 13. What is the term for the electrochemical process that prevents further corrosion by creating a protective oxide layer on a metal surface?
A) Polarization
B) Neutralization
C) Passivation
D) Inhibition
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