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Electro Chemistry — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryElectro Chemistry1 Mark
Question
Define corrosion. What is the chemical formula of rust?
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Answer

Corrosion: The process of slow deterioration of a metal by the gases and water vapours present in air is called corrosion.
The chemical formula of rust is $Fe_{2}O_{3} \cdot xH_{2}O$.

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