Corrosion Engineering Objective Online Exam Quiz
Corrosion Engineering Objective GK Quiz. Question and Answers related to Corrosion Engineering Objective. MCQ (Multiple Choice Questions with answers about Corrosion Engineering Objective
What is the cathodic and anodic reactions respectively of Cu-Ag system?
Options
A : Ag==>Ag+2+2e and Cu+2+2e==>Cu
B : Cu==>Cu+2+2e and Ag==>Ag+2+2e
C : 2Ag+1+2e==>2Ag and Cu==>Cu+2+2e
D : 2Ag==>2Ag+1+2e and Cu+2+2e==>Cu
Which of the following is a cathode and anode respectively in the Ag-Fe system?
Options
A : Iron (Fe) and Silver (Ag)
B : Silver (Ag) and Iron (Fe)
C : Gold (Ag) and Iron (Fe)
D : Iron (Fe) and Gold (Ag)
Which of the following type of reaction is shown in the given figure?
Options
A : Non-spontaneous reaction
B : Equilibrium reaction
C : Neither spontaneous nor non-spontaneous reaction
D : Spontaneous reaction
Which of the following diagrams shows the stability of metals over a range of pH and potential of a system?
Options
A : Phase diagrams
B : Pourbaix diagrams
C : Phase diagrams and Pourbaix diagrams
D : Colling curves
Which of the following is/are the applications of Pourbaix diagrams?
Options
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
Which of the following is/are the limitations of Pourbaix diagrams?
Options
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
An electrochemical reaction is always a combination of oxidation half-cell and a reduction of half-cell.
Options
A : True
B : False
C :
D :
Which of the following zone of given Pourbaix diagram indicates the immune zone?
Options
A : Zone 1
B : Zone 2
C : Zone 3
D : Zone 4
Which of the following zone(s) of given Pourbaix diagrams indicate a passive zone?
Options
A : Zone 1 and 2
B : Zone 2 and 3
C : Zone 2, 3 and 6
D : Zone 4 and 5
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