The gas we use in the kitchen is LPG.In the cylinder it exists as a liquid.When it comes out from the cylinder it becomes a gas ,then it burns .the following statements pertain which of the following changes.
Process-A is a chemical change
Process-B is a physical change
C-both A and B
D- None of these



C- Both A and B
Because the conversion from liquid state to gaseous state is a physical change. And burning of the gas is a chemical change.