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Q.

Is it true that rusting is a chemical change?


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a

True

b

False  

answer is A.

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Detailed Solution

The above statement is true.  A chemical change is said to have occured when a new substance is formed. Chemical changes are irreversible in nature. In the presence of air and moisture iron gets corroded and forms a reddish-brown substance called rust. This process of corrosion of iron is called rusting. In rusting a new product is formed therefore rusting is a chemical change.
 
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