Question

is a process that involves direct conversation of a solid into its vapour on
heating​

Answer 1

Answer:

this process is called Sublimation

where solid directly changes into gas

Answer 2

Answer:

CHANGE OF STATE: “The process of change from one state(form) to another state (form) either by absorption or rejection of heat at a constant temperature is called the CHANGE OF STATE.” COMPLETE CYCLE OF CHANGE OF STATE: On heating solid changes to liquid and liquid on heating changes to vapours.