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Q. |
The rusting of iron is a/an - |
A. | physical change |
B. | electrochemical change |
C. | electrical change |
D. | None of the above |
Answer» B. electrochemical change | |
Explanation: When iron is exposed to air and moisture, its surface gradually corroded and converted into a brown mass. The rusting of iron is due to the formation of hydrated ion. Rusting is an electro-chemical process. |
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