Changes in the physical in the scheme above.The letter X,Y and Z respectively represent

Changes in the physical in the scheme above.The letter X,Y and Z respectively represent

Answer Details

The diagram above shows a process where a solid (X) is heated to form a gas (Y), which is then cooled to form a liquid (Z). The changes in physical state are sublimation (X to Y), and condensation (Y to Z). The solid changes directly to gas without passing through the liquid phase during sublimation, and the gas changes to liquid during condensation. Therefore, the answer is (A) sublimation, condensation and freezing.