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What is corrosion of Iron Called?

Answer
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Hint: We know that Articles made of iron upon exposure to air start forming a coat in the form of chips which we call rusting of iron. This process is due to the chemical reaction between the iron present on the surface with the oxygen from the atmosphere. The most common example of corrosion is the rusting of iron. Rust can also affect iron alloys such as steel.

Complete answer:
The rusting of iron can also occur when iron reacts with chloride in an oxygen-deprived environment, while green rust, which is another type of corrosion, can be formed directly from metallic iron or iron. The water vapors and air are responsible for the formation of rust because they react with the surface of metal by which corrosion occurs. Rusting of iron involves an increase in the oxidation state of iron, accompanied by a loss of electrons. Oxygen is a very good oxidizing agent whereas iron is a reducing agent. Therefore, the iron atom readily gives up electrons when exposed to oxygen. Articles made of iron upon exposure to air starts forming a coat in the form of chips which we call rusting of iron.
This process is due to the chemical reaction between the iron present on the surface with the oxygen from the atmosphere. Iron gets oxidised into iron oxide under the action of oxygen present in the atmosphere. The process of rusting of iron is called corrosion. Corrosion is a chemical change as the formation of iron oxide is an irreversible process. Corrosion can occur when the substance is exposed to air or some chemicals. Rusting mainly occurs when a metal is exposed to air and moisture. The most common example of corrosion is the rusting of iron. Rust can also affect iron alloys such as steel. The rusting of iron can also occur when iron reacts with chloride in an oxygen-deprived environment, while green rust, which is another type of corrosion, can be formed directly from metallic iron or iron.

Note:
Remember that the iron present on the surface of an iron article changes its colour to greenish-brown upon exposure to the atmosphere. Corrosion occurs in a wide range of objects. Corrosion includes rusting and Rust will increase and speed up the corrosion process.