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Air and Atmosphere — CHEMISTRY STD 7 — Question

ICSE BoardEnglish MediumSTD 7CHEMISTRYAir and Atmosphere2 Marks
Question
What is rusting?
✓

Answer

The slow conversion of iron into its hydrated ferric oxide, in the presence of moisture and air is called rusting.
$Fe_2O_3 + xH_2O → Fe_2O_3.xH2O$
Ferric oxide Water Hydrated ferric oxide
(rust)

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