State two essential conditions for rusting of iron. List two methods of protecting iron from rusting?

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Solution

Rusting of iron (Fe) is caused by oxidation of Fe to form Fe₂O₃.
The two essential conditions are:
a) Presence of Oxygen
b) Presence of Water whose pH is in acidic range.

Rusting can be prevented by either Galvanizing iron or Coating it with Paint lacquer or varnish

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Name two conditions which are essential for rusting. Write the chemical equation for rusting of Iron. [2 MARKS]

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