WorksheetsCorrosion
Total questions: 12
Worksheet time: 11mins
What is the chemical nature of rust?
iron (II) oxide
hydrated iron (II) oxide
iron (III) oxide
hydrated iron(III) oxide
What conditions are required for rusting?
water only
oxygen only
water and oxygen
What is oxidation?
A reaction involving oxygen
A reaction involving non-metals
Name the two general classifications of corrosion.
Direct chemical attack and Electrochemical attack.
Fretting corrosion and Galvanic attack.
Rusting is a _____________ process.
Mechanical
Chemical
Physical
Rusting can be prevented by
Alloying
Tinning
Galvanizing
All of above
two types of Noble metals
gold and platinum
iron and copper
stainless steel and aluminum
tin and brass
Coating of Zn, Al and Cd on steel are _________ , because their electrode potentials are lower
Cathodic
Anodic
Not affecting
Expensive
