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Question

What are the factors responsible for rusting in iron?


A

Physical process.

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B

Chemical process.

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C

Physical and chemical process.

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D

Biological Process.

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Solution

The correct options are
A

Physical process.


C

Physical and chemical process.


D

Biological Process.


Rusting is a chemical process and it happens when they come into contact with water and oxygen. Both water and oxygen are needed for rusting to occur.
The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust.


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