Question

the gas we use in the kitchen is called as liquid 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
1. Process- A is a chemical change
2. Process- B is a chemical change
3. Both process are A and B are chemical change
4. None of these processes is a chemical change

Answer 1

Answer- 2. Process-B is a chemical change.
Reason- When the gas burns, it releases CO2 and vapours.
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Answer 2

2. Process- B is a chemical change because gas changes into vapour.