Question

how interconversion of matter can be achieved

Answer 1

Interconversion between the various states of matter is usually achieved by change in temperature.That is, solids can be converted into liquids by heating.Similarly liquids can be converted into gases by heating.Conversely, gases can be converted into liquids and liquids can be converted into solids by cooling.In gases which are highly compressible, change in pressure also brings about a change in states of matter.
Hence, we can say that states of matter can be converted by-
1- Change in temperature
2- Change in pressure

Answer 2

Interconversion between states of matter is usually achieved by changing the temperature and pressure. That is, solids can be converted into liquids by heating, the process is known as melting. Similarly liquids can be converted into gases by heating, evaporation. that is answer teacher check clearly