On which one of the following factors potential energy of a body depends?
| Aman: Rusting of iron is a chemical change. |
| Puja: Rusting of iron is a physical change. |
| Who is correct? |
| John: Melting of wax is a physical change whereas burning of wax is a chemical change. |
| Ibrahim: Melting of wax is a chemical change whereas burning of wax is a physical change. |
| Who is correct? |
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