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प्रश्न
Rusting of an article made up of iron is called
विकल्प
corrosion and it is a physical as well as chemical change
dissolution and it is a physical change
corrosion and it is a chemical change
dissolution and it is a chemical change
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उत्तर
corrosion and it is a chemical change
Explanation:
Rusting of an article made up of iron is called corrosion. Corrosion is a chemical change because rust is a chemical compound (hydrated iron oxide, Fe2O3 - H2O) which is totally different from element iron (Fe).
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