- 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 physical reaction between two materials resulting in degradation.
D) A chemical reaction between a material and its environment resulting in degradation of the material.
- 2. Which metal is commonly used as a sacrificial anode to protect less noble metals from corrosion?
A) Copper
B) Aluminum
C) Titanium
D) Zinc
- 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) Erosion corrosion
B) Galvanic corrosion
C) Crevice corrosion
D) Pitting corrosion
- 5. What is the purpose of a corrosion inhibitor?
A) To accelerate the corrosion process
B) To increase the electrical conductivity of metals
C) To promote galvanic corrosion
D) To reduce or prevent corrosion of metals
- 6. What is the term for the electrochemical process that prevents further corrosion by creating a protective oxide layer on a metal surface?
A) Passivation
B) Polarization
C) Inhibition
D) Neutralization
- 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) Galvanic corrosion
B) Intergranular corrosion
C) Uniform corrosion
D) Pitting corrosion
- 9. What can be an effective method to prevent corrosion in buried pipelines?
A) Cathodic protection
B) Coating the pipeline with insulating material
C) Increasing the pipeline diameter
D) Using less corrosion-resistant metals
- 10. What is the term for the penetration of hydrogen into a metal, making it prone to cracking?
A) Intergranular attack
B) Corrosion rate
C) Hydrogen embrittlement
D) Oxidation
- 11. What is the principle behind using a corrosion coupon to monitor corrosion rates?
A) Immersing the coupon in a strong acid to accelerate corrosion
B) Applying an electric current to the coupon to measure resistance
C) Comparing the weight loss of the coupon over time to determine the rate of corrosion
D) Subjecting the coupon to high temperatures to induce corrosion
- 12. What is the scientific principle behind the process of cathodic protection?
A) Electrolysis
B) Oxidative reaction
C) Sacrificial anode
D) Ionic bonding
- 13. Which factor is most commonly used to measure the severity of corrosion in a given environment?
A) Surface area of the metal
B) Corrosion rate
C) Electrical conductivity of the metal
D) Metal's density
|