A) Heating of iron to red hot
B) Magnetisation of iron piece
C) Rusting of iron
D) All of the above
Correct Answer: C
Solution :
[c] Rusting of iron is a chemical change. In this process iron is converted into rust (hydrated iron oxide, \[F{{e}_{2}}{{O}_{3}}.x{{H}_{2}}O)\] the presence of water and oxygen.
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