Rust is an oxide, usually red oxide formed by the reaction of metal 'X' and oxygen in the presence of water and air. Identify 'X'.

Copper

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Iron

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Solution

The correct option is B Iron
Ferric oxide or Iron oxide is commonly known as rust is the oxide of iron formed in the presence of water and air.

4Fe + 3O2 ---> 2Fe2O3

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Rust is an oxide, usually red oxide formed by the reaction of metal 'X' and oxygen in the presence of water and air. Identify 'X'.

The correct option is B IronFerric oxide or Iron oxide is commonly known as rust is the oxide of iron formed in the presence of water and air.4Fe + 3O2 ---> 2Fe2O3

The correct option is B Iron
Ferric oxide or Iron oxide is commonly known as rust is the oxide of iron formed in the presence of water and air.

4Fe + 3O2 ---> 2Fe2O3