Which of the following is a chemical change?

Correct option is C

The correct answer is (c) Combustion of Liquefied Petroleum Gas (LPG).
· Combustion of LPG is a chemical change because it involves a chemical reaction where LPG (primarily propane or butane) reacts with oxygen to produce carbon dioxide, water, and heat.
· This process changes the chemical composition of LPG, making it an irreversible change.
Information Booster:
· Melting of ice to give water: A physical change, as it only changes the state from solid to liquid without altering the chemical composition.
· Boiling of water to give water vapour: A physical change, as it changes from liquid to gas but remains H₂O.
· Dissolution of salt in water: A physical change, as the salt can be recovered by evaporating the water, and there is no change in chemical composition.