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WorksheetsCORROSION
Total questions: 10
Worksheet time: 3mins
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
Which of the following is / are examples of sacrificial protection against rusting?
(1) Iron object coated with tin
(2) Underground iron pipes connected to magnesium bars
(3) Iron railings coated with paint
(1) only
(2) only
(1) and (3) only
(2) and (3) only
Rusting is a _____________ process.
Mechanical
Chemical
Physical
Rusting is a special term, given to the corrosion metal is... .
Au
Pt
Fe
Ag
Corrosion is ....
fast reaction
oxidation of metal surface
useful reaction
Reaction of metal and water
Corrosion on magnesium can be identified as
Reddish - brown oxide
Blue - greenish powdery deposit
Grey colour deposits
White spots on the surface
