The gas we use in the kitchen is called liquified petroleum gas (LPG). In the cylinder it exists as a liquid. When it comes out from the cylinder it becomes a gas (Change – A) then it burns (Change – B). The following statements pertain to these changes. Choose the correct one.
- Process – A is a chemical change.
- Process – B is a chemical change.
- Both processes A and B are chemical changes.
- None of these processes is a chemical change.
(ii) Since the gas burns , it cannot be re-obtained in its original form.
Therefore, Process − B is a chemical change .
So, the correct answer is (ii)