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Reaction of Metals with Oxygen

Rust of iron ...

Question

Rust of iron is basically:

A

A chloride

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B

An oxide

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C

A sulphide

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D

A nitride

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Solution

The correct option is B
An oxide

Iron reacts with water and oxygen to produce rust which is an oxide.

The reaction is as follows:

4Fe + 3O₂ + 2H₂O → 2Fe₂O₃.2H₂O

Iron rusts in moist air to form hydrated ferric oxide.

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