- 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) An electrochemical process that extends material lifespan.
B) A mechanical process that strengthens materials.
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) Aluminum
B) Zinc
C) Titanium
D) Copper
- 3. Which type of corrosion occurs when two dissimilar metals are in contact in the presence of an electrolyte?
A) Pitting corrosion
B) Intergranular corrosion
C) Crevice corrosion
D) Galvanic 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) Crevice corrosion
D) Pitting corrosion
- 5. What is the purpose of a corrosion inhibitor?
A) To increase the electrical conductivity of metals
B) To reduce or prevent corrosion of metals
C) To promote galvanic corrosion
D) To accelerate the corrosion process
- 6. What is the term for the electrochemical process that prevents further corrosion by creating a protective oxide layer on a metal surface?
A) Inhibition
B) Polarization
C) Neutralization
D) Passivation
- 7. Which type of corrosion is localized damage to a metal surface at the contact zone between the metal and another substance?
A) Pitting corrosion
B) Uniform corrosion
C) Intergranular corrosion
D) Contact corrosion
- 8. What type of corrosion is observed as a gradual attack along the grain boundaries of a metal?
A) Uniform corrosion
B) Galvanic corrosion
C) Pitting corrosion
D) Intergranular corrosion
- 9. What can be an effective method to prevent corrosion in buried pipelines?
A) Using less corrosion-resistant metals
B) Coating the pipeline with insulating material
C) Cathodic protection
D) Increasing the pipeline diameter
- 10. What is the term for the penetration of hydrogen into a metal, making it prone to cracking?
A) Intergranular attack
B) Oxidation
C) Hydrogen embrittlement
D) Corrosion rate
- 11. What is the principle behind using a corrosion coupon to monitor corrosion rates?
A) Comparing the weight loss of the coupon over time to determine the rate of corrosion
B) Immersing the coupon in a strong acid to accelerate corrosion
C) Subjecting the coupon to high temperatures to induce corrosion
D) Applying an electric current to the coupon to measure resistance
- 12. What is the scientific principle behind the process of cathodic protection?
A) Electrolysis
B) Ionic bonding
C) Oxidative reaction
D) Sacrificial anode
- 13. Which factor is most commonly used to measure the severity of corrosion in a given environment?
A) Electrical conductivity of the metal
B) Metal's density
C) Corrosion rate
D) Surface area of the metal
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