Question

rusting of an iron nail is a dash reaction

Answer 1

Rusting of iron is a combination reaction.

Explanation:

• The phenomenon through which a black colored layer is formed over the surface of objects made of iron, it is called as rusting.
• The factors which facilitates rusting are air and water.
• When an iron object is exposed to air for longer time, the iron reacts with the oxygen and leads to the formation of Iron (III) oxide.
• The chemical reaction involved is as follows:

$Fe + O_2\rightarrow Fe_2O_3$

• As Iron (Fe) and oxygen (O) are combining with one another and leads to the formation of new product called Iron (III) oxide ($Fe_2O_3$), this reaction is called combination reaction.

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