Corrosion Engineering Eight Forms Intergranular Corrosion 1 Online Exam Quiz
Corrosion Engineering Eight Forms Intergranular Corrosion 1 GK Quiz. Question and Answers related to Corrosion Engineering Eight Forms Intergranular Corrosion 1. MCQ (Multiple Choice Questions with answers about Corrosion Engineering Eight Forms Intergranular Corrosion 1
What is the minimum percent of chromium is needed to make stainless steel?
Options
A : 2%
B : 20%
C : 1%
D : 11%
Which of the following corrosives that induce intergranular corrosion in austenitic stainless steel?
Options
A : Acetic acid
B : Acetic acid+salicylic acid
C : Ammonium nitrate
D : Acetic acid, acetic acid+salicylic acid, ammonium nitrate
What is the structure of chromium carbide that precipitates at the grain boundaries?
Options
A : Acicular structure
B : Leaflike structure
C : Lamellar structure
D : No specific structure
What is the molecular formula of chromium carbide formed due to the depletion of chromium in 18-8 stainless steel?
Options
A : Cr3C
B : Cr5C3
C : CrC
D : Cr23C6
Which of the following is/are more reactive in intergranular corrosion?
Options
A : Grain
B : Grain boundary
C : Both grain and grain boundary
D : Neither grain nor grain boundary
Which of the following areas is/are corroded in the intergranular corrosion of stainless steel?
Options
A : Grain only
B : Grain boundary only
C : Chromium depleted zone near the grain boundary
D : Both grain and grain boundary
Which of the following is/are the causes of intergranular corrosion?
Options
A : Impurities at the grain boundaries
B : Enrichment of one of the alloying elements at the grain boundary
C : Depletion of one of the alloying elements at the grain boundary
D : Impurities at the grain boundaries, enrichment, and depletion of one of the alloying elements at the grain boundary
Which of the following corrosion type is depicted in the given figure?
Options
A : Intergranular corrosion
B : Galvanic corrosion
C : Crevice corrosion
D : Pitting corrosion
Which of the following term is associated with intergranular corrosion in welded structures?
Options
A : Intergranular weld
B : Weld failure
C : Weld decay
D : Weld corrosion
Which of the following alloys is/are prone to intergranular corrosion?
Options
A : Iron in aluminum
B : Zinc in brass
C : 18-8 Stainless steel
D : Iron in aluminum, zinc in brass and 18-8 stainless steel
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