Question
What is rust ? State two important conditions necessary for rusting.
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Answer
When an iron object is exposed to moist air, its surface gets covered with a reddish brown powder called rust. Two conditions necessary for rusting to take place :
(i) Presence of air (or oxygen)
(b) Presence of water (or moisture).
(i) Presence of air (or oxygen)
(b) Presence of water (or moisture).
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