alleryRust is chemically:
AFe₂O₃ alone
BFeO
CHydrated ferric oxide (Fe₂O₃·xH₂O)
DFe₃O₄
Answer & Solution
Correct answer: C. Hydrated ferric oxide (Fe₂O₃·xH₂O)
Fe²⁺ (formed at the anodic spot) is further oxidised in air to Fe³⁺ and combines with water
→ **hydrated ferric oxide, Fe₂O₃·xH₂O** = rust.
The reddish-brown flaky form.
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