State whether the given statement is true or false.

Rust is formed when iron reacts with water and air.

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True

False

answer is A.

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Detailed Solution

The given statement is true.
Concept- Rust is iron oxide that forms a layer on the surface of the metal and eventually turns the metal completely into rust.
Rust is formed by the reaction of metallic iron with oxygen in the presence of water or air humidity. It is reddish-brown in colour. Thus, rusting of iron is characterised by the formation of a layer of red, flaky matter that easily crumbles into powder.
Rust consists of hydrated iron oxides (

) .Iron is present in the +3 oxidation state. Rust spots can be removed by reacting with oxalic acid.
Therefore, it is correct that rust is formed when iron reacts with water and air.
Thus, the given statement is true.
Hence, the correct option is (1).

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