Corrosion Engineering Eight Forms Crevice Corrosion Online Exam Quiz
Corrosion Engineering Eight Forms Crevice Corrosion GK Quiz. Question and Answers related to Corrosion Engineering Eight Forms Crevice Corrosion. MCQ (Multiple Choice Questions with answers about Corrosion Engineering Eight Forms Crevice Corrosion
What is the incubation period associated with a crevice attack?
Options
A : 1 month – 10 months
B : 1 hour – 10 hours
C : 1 day – 10 days
D : 6 months – 1 year
Which of the following type of corrosion is localized in nature?
Options
A : Crevice corrosion
B : Galvanic corrosion
C : Uniform corrosion
D : Inter-granular corrosion
Which of the following is the other name of crevice corrosion?
Options
A : Filiform corrosion
B : Deposit or gasket corrosion
C : Two-metal corrosion
D : Surface corrosion
Which of the following ions that accelerate the dissolution rate of metals or alloys in a crevice?
Options
A : H+, OH–
B : H+, Cl–
C : OH–, Cl–
D : OH–, Cl– and H–
Which of the following characteristics of the crevice is a must to act as a corrosion site?
Options
A : It should be wide enough to permit liquid entry
B : It should be narrow enough to maintain a stagnant zone
C : It should be wide enough to avoid a stagnant zone
D : It should be wide enough to permit liquid entry and narrow enough to maintain a stagnant zone
Which of the following chemical reaction that usually occurs in the crevice?
Options
A : M++H2O=MOH
B : M++Cl–=MCl(s)
C : M+Cl–+H2O=MOH(aq)+H+Cl–
D : 4OH–=O2+2H2O+4e–
Which of the following combination results in crevice corrosion?
Options
A : Metal and absorbent gaskets
B : Continuous weld metals
C : Metal and non-absorbent gaskets
D : Single metal piece
Which of the following metal is highly resistant to crevice corrosion?
Options
A : Stainless steel
B : Copper
C : Aluminum
D : Hastelloy C-276
Which of the following is/are the reasons for the cause of crevice corrosion?
Options
A : The stagnant solution in the holes and gasket surfaces
B : The stagnant solution in the lap joints and surface deposits
C : Dissimilar metal contact
D : The stagnant solution in the holes, gasket surfaces, lap joints, and surface deposits
What is the primary condition regarding the velocity of an electrolyte to form crevice corrosion?
Options
A : The velocity of the electrolyte should be greater than 10cm/s
B : The velocity of the electrolyte should be less than 10cm/s
C : The velocity of the electrolyte should be equal to 10cm/s
D : The stagnant electrolytic solution should be present
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