Question

Q10. 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 - X), then it bums (Change - Y). The following statements pertain to
these changes. Choose the correct one.
A. Process - X is a chemical change.
B. Process – Y is a chemical change.
C. Both processes X and Y are chemical changes.
D. None of these processes is a chemical change.​

Answer 1

Answer:

hello..

Explanation:

Change A is physical change - In this change, the liquefied gas changes it states from liquid to gas and hence no new substance are formed.

Change B is chemical change:- Burning produces new substance and hence the reaction can't be reversed back.

         Gas----> burning..       CO2+ heat+ other substances..

HOPE THIS HELPS U..

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Answer 2

Answer:

The correct answer is (B).

Explanation:

Change A is physical change - In this change, the liquefied gas changes it states from liquid to gas and hence no new substance are formed.

Change B is chemical change:- Burning produces new substance and hence the reaction can't be reversed back.