Corrosion of Metals (Leaving Cert Engineering): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What causes corrosion of metals?
What causes corrosion of metals?
Chemical changes or electrical reactions
Which surface area does uniform corrosion affect?
Which surface area does uniform corrosion affect?
The entire exterior surface evenly
Where does crevice corrosion occur?
Where does crevice corrosion occur?
Small, confined spaces
What two conditions cause stress corrosion cracking?
What two conditions cause stress corrosion cracking?
Stress and corrosive environment
What triggers galvanic corrosion?
What triggers galvanic corrosion?
Two different metals in wet conditions
What substances does iron react with when rusting?
What substances does iron react with when rusting?
Moisture and oxygen
What causes tarnishing of silver?
What causes tarnishing of silver?
Sulfur compounds in the air
What compounds form the green patina on copper?
What compounds form the green patina on copper?
Copper carbonate or copper sulfate
Which are examples of protective layers against corrosion?
Which are examples of protective layers against corrosion?
Grease, oil, paint, carbon fibre
Which metals are rust-resistant?
Which metals are rust-resistant?
Stainless steel and aluminium
How do electrolytes increase corrosion rates?
How do electrolytes increase corrosion rates?
By facilitating ion movement
How does temperature affect corrosion rates?
How does temperature affect corrosion rates?
Higher temperatures increase rates