← Chemistry (0620)
Q1 / 5
Corrosion
Foundation
2 marks
What conditions are necessary for iron to rust?
A
Both oxygen (air) and water must be present; either alone is insufficient
B
Only oxygen is needed — water is not necessary
C
Only water is needed — oxygen has no role
D
Iron rusts due to reaction with nitrogen in the air
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Corrosion — Chemistry (0620) | Smartzi