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प्रश्न
What is rust ?
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उत्तर १
Rust: Rust is hydrated ferric oxide (Fe2O3 . x* H2O), which forms a brownish red coating over iron. (* x can be any number.)
उत्तर २
The hydrated oxide of iron formed when iron comes in contact with moist air is called rust. This rust is brownish flaky residue and easily crumbles from the metal surface.
4Fe + 3O2 → 2Fe2O3
Iron Oxygen Ferric oxide
संबंधित प्रश्न
A metal highly resistant to rusting.
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Write ‘True’ or ‘False’ in front of following statement.
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Combustion and Respiration
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Give reason for the following:
Acid rain has caused damage to heritage structures such as the Taj Mahal.
