Question

Wood and iron both are solid, so why wood burns and iron melts? Give reason.

Answer 1

Because wood is a combustible substance and iron is a non-combustible substance.
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Answer 2

Iron is a metallic in nature and wood is combustible substance.
In iron nothing to combustion but wood has alot of substances included to burn ...
You know a small amount of oil also exist in wood ....

In iron only fe (ferus) but in wood a lot of reason to burn