The process by which matter in solid state changes to gaseous state, due to an increase in temperature is called as ___________ and reverse of this (gaseous state to solid state), due to a decrease in temperature is called as_________.
Condensation
The phase transition from solid state to gaseous state without undergoing the intermediate liquid state by increasing the temperature of solid is called as sublimation while the reverse of it (gaseous state to solid state) by decreasing the temperature is called desublimation or deposition.