Explain how painting of an iron gate prevents it from rusting. [2 marks]

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Solution

$∙$ Rusting of iron requires contact of the metal surface with both water (moisture) and oxygen. [1 mark]
$∙$ The application of a paint coating prevents the contact of the iron surface with oxygen and water (moisture). Thus preventing the rusting of the iron gate. [1 mark]

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Question 9
Explain how the painting of an iron gate prevents it from rusting.

Applying a coat of paint over an iron gate prevents it from rusting.

explain how painting on iron articles prevent rusting

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An iron gate has to be painted every year otherwise it will start rusting. Why?

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