MCQOPTIONS

Explore topic-wise MCQs in Corrosion Engineering.

This section includes 6 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 is/are the limitations of Pourbaix diagrams?
A.	Rate of reaction is can t be predicted
B.	It neglects the impurities of working conditions
C.	Stability of metallic species is predicted
D.	Rate of reaction is not predicted and it neglects the impurities of working conditions
Answer» E.

2.	Which of the following is/are the applications of Pourbaix diagrams?
A.	Predicting the spontaneous direction of reactions
B.	To reduce corrosion attack
C.	To reduce corrosion attack, to predict the direction of spontaneous reaction and to estimate the composition of corrosion product
D.	To estimate the composition of corrosion product
Answer» D. To estimate the composition of corrosion product

3.	Which of the following diagrams shows the stability of metals over a range of pH and potential of a system?
A.	Phase diagrams
B.	Pourbaix diagrams
C.	Phase diagrams and Pourbaix diagrams
D.	Colling curves
Answer» C. Phase diagrams and Pourbaix diagrams

4.	What is the cathodic and anodic reactions respectively of Cu-Ag system?
A.	Ag==>Ag<sup>+2</sup>+2e and Cu<sup>+2</sup>+2e==>Cu
B.	Cu==>Cu<sup>+2</sup>+2e and Ag==>Ag<sup>+2</sup>+2e
C.	2Ag<sup>+1</sup>+2e==>2Ag and Cu==>Cu<sup>+2</sup>+2e
D.	2Ag==>2Ag<sup>+1</sup>+2e and Cu<sup>+2</sup>+2e==>Cu
Answer» D. 2Ag==>2Ag<sup>+1</sup>+2e and Cu<sup>+2</sup>+2e==>Cu

5.	An electrochemical reaction is always a combination of oxidation half-cell and a reduction of half-cell.
A.	True
B.	False
Answer» B. False

6.	Which of the following is a cathode and anode respectively in the Ag-Fe system?
A.	Iron (Fe) and Silver (Ag)
B.	Silver (Ag) and Iron (Fe)
C.	Gold (Ag) and Iron (Fe)
D.	Iron (Fe) and Gold (Ag)
Answer» C. Gold (Ag) and Iron (Fe)