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Q.

Is it true that rusting of iron is an irreversible change?


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a

True

b

False  

answer is A.

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Detailed Solution

The above statement is true.
An irreversible change is a change where we cannot get back the original substance in shape and form, which means it cannot be reversed. For example, iron, with the action of air and moisture, forms a new compound called rust that covers the surface of the iron. The rust which is once formed cannot be converted back into iron. Rusted iron also loses its shine as well as strength. In any case, we cannot get back the original iron. So, rusting of iron is an irreversible change.
 
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