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Ram bought an iron shield and displayed it in balcony of his house. After a week, he observed brown deposits over it. What type of change is it? Give reason.
The brown deposits on the iron shield is known as rust. Rusting is a Chemical change. Explanation: Rust is an iron oxide, a usually reddish-brown oxide formed by the reaction of iron and oxygen in presence of moisture. The chemical equation for the reaction is given below: Iron + water + oxygen → hydrated iron(III) oxide. Fe + H2O + O2 → Fe2O3·H2O.
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