Question

melting of butter is a permanent change desirable change fast change and permanent change​

Answer 1

Yes, melting of butter is a physical change because the butter can be solidified again (i.e. reversible change). In melting of butter only state of the chemical substance is changed

Answer 2

No chemical bonds are broken or formed in melting butter, so it is not a chemical change. The melting process is only a physical change, the change of state from solid to liquid ,it is a temporarily changed because of temperature