moisture is called ....
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6 The reddish brown powder on the
surface of iron nails exposed to air and
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Answer:
Hydrated iron oxide
Explanation:
Due to corrosion of iron in the atmosphere,
cause the rusting of iron .
Reaction :-
4Fe + 3O2 + nH2O -> 2Fe2O3.nH2.O
where n is number of water molecules
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