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Standard VII
Chemistry
Rusting
Question
The chemical formula of rust is?
A
$$Fe$$
B
$$FeO$$
C
$$Fe_{2}O_{3}$$
D
$$FeSO_{4}$$
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Solution
Verified by Toppr
Correct option is A. $$Fe_{2}O_{3}$$
Rust is iron oxide $$(Fe_2O_3)$$. It is formed when iron reacts with oxygen in the presence of moisture.
$$Iron\ (Fe) + Oxygen\ (O_2) + Water\ (H_2O) \rightarrow Rust\ (Fe_2O_3)$$
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