Corrosion Engineering MCQ

Q1. What is corrosion?

Q2. Which type of corrosion is most difficult to detect?

Q3. Pilling-Bedworth Ratio (PBR) less than 1 indicates:

Q4. Galvanic corrosion occurs when:

Q5. What is the anodic reaction in corrosion?

Q6. Cathodic protection involves:

Q7. Which metal corrodes preferentially and protects other metals when connected?

Q8. Crevice corrosion is caused due to:

Q9. Passivation refers to:

Q10. Which of following is a common corrosion inhibitor?

Q11. The rate of corrosion depends on:

Q12. Corrosion resulting in uniform thinning over entire surface is:

Q13. What is the effect of increasing oxygen concentration on corrosion?

Q14. Electrochemical corrosion requires:

Q15. Stress corrosion cracking occurs due to:

Q16. Which of the following is a method to prevent corrosion?

Q17. Rust is primarily:

Q18. Sacrificial anode cathodic protection mainly uses which metal?

Q19. Passivating metals include:

Q20. Which process measures corrosion rate?

Q21. Galvanic series is:

Q22. Corrosion inhibitors work by:

Q23. Pitting corrosion is:

Q24. Stress corrosion cracking primarily affects:

Q25. Which layer protects stainless steel from corrosion?

Q26. Cathodic protection is commonly used on:

Q27. Impressed current cathodic protection requires:

Q28. Corrosion potential difference between two metals causes:

Q29. Which corrosion type involves microbial activity?

Q30. Stress corrosion cracks often initiate at:

Q31. Metal passivation creates:

Q32. Cyclic polarization curves are used to study:

Q33. Which condition accelerates corrosion?

Q34. Role of oxygen in aqueous corrosion is:

Q35. Electrochemical corrosion cell requires:

Q36. Corrosion scale formation can:

Q37. Which is an effective rust prevention method?

Q38. Electrochemical corrosion is reversible?

Q39. Oxidation occurs at:

Q40. Which is commonly used to measure corrosion rate?