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Q.

Is it true that the combustion of LPG is a physical change?


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a

True

b

False 

answer is B.

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Detailed Solution

The above statement is false.
New products are formed during the combustion of LPG. Thus, it is a chemical change. A chemical change is one where the newly formed substance cannot be reverted back into its original form. It is also known as non-reversible change. A physical change is where the newly formed substance can be reverted back into its original state. It is also known as reversible change.
The correct statement would be, “Combustion of LPG is a chemical change”.
 
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