Corrosion Engineering Mineral Acids Hydrofluoric Acid Phosphoric Acid Online Exam Quiz
Corrosion Engineering Mineral Acids Hydrofluoric Acid Phosphoric Acid GK Quiz. Question and Answers related to Corrosion Engineering Mineral Acids Hydrofluoric Acid Phosphoric Acid. MCQ (Multiple Choice Questions with answers about Corrosion Engineering Mineral Acids Hydrofluoric Acid Phosphoric Acid
Which of the following materials is/are widely used for phosphoric acid?
Options
A : 316 stainless steel
B : Durimet 20
C : Neither 316 stainless steel nor Durimet 20
D : Both 316 stainless steel and Durimet 20
Which of the following materials exhibits poor corrosion resistance to phosphoric acid?
Options
A : Aluminum and brass
B : Aluminum, brass, steel, cast iron, ferritic and martensitic stainless steels
C : Steel and cast iron
D : Ferritic and martensitic stainless steels
Why straight chromium stainless steels and austenitic stainless steels are not recommended for hydrofluoric acid applications?
Options
A : Due to susceptibility to crevice
B : Due to limited corrosion resistance
C : Due to susceptibility to pitting
D : Sensitive to erosion-corrosion
Which of the following is/are the impurities that cause corrosion in commercial phosphoric acid?
Options
A : Fluorides
B : Chlorides
C : Sulfuric acids
D : Fluorides, chlorides and sulfuric acid
Which of the following material is/are primarily used for hydrofluoric acid?
Options
A : High-silicon cast iron
B : Magnesium
C : Aluminum
D : Glass and stoneware
Which of the following metal is suitable in handling high concentrations (>60%) of hydrofluoric acid?
Options
A : Stainless steel
B : Brass
C : Steel
D : Titanium
Which of the following is/are the impurities in commercial hydrofluoric acid that decreases corrosion of steel?
Options
A : Sulfuric acid
B : Fluosilicic acid
C : Neither sulfuric acid nor fluosilicic acid
D : Both sulfuric acid and fluosilicic acid
Which of the following non-metallic has the highest corrosive resistance to the phosphoric acid with temperature?
Options
A : Teflon
B : Graphite
C : Polyvinyl chloride
D : Polyethylene
Hydrofluoric acid and fluorine are toxic and extreme care are mandatory in the handling of these materials.
Options
A : True
B : False
C :
D :
Which of the following metal is an outstanding material that resists all concentrations of hydrofluoric acid at all temperatures?
Options
A : Wrought Monel
B : Steel
C : Stainless steel
D : Hastelloy C
Chemical Engineering Basics - Part 1 more Online Exam Quiz
Corrosion Engineering Interview Freshers
Corrosion Engineering Materials Metals Alloys 1
Corrosion Engineering Materials Thermoplastics
Corrosion Engineering Materials Thermosetters
Corrosion Engineering Mineral Acids Sulfuric Acid
Corrosion Engineering Modern Theory Principles Passivity
Corrosion Engineering Modern Theory Principles Polarization 1
Corrosion Engineering Modern Theory Principles Thermodynamics 1