Question

Which of the following is not a physical change?

A

Boiling of water to give water vapour

B

Melting of ice to give water

C

Dissolution of salt in water

D

Combustion of Liquefied Petroleum Gas (LPG)

Medium

Solution

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Correct option is D)

LPG is flammable hydrocarbon gases that react with oxygen to form new products such as carbon dioxide () and water (). Therefore, the combustion of LPG is a chemical change.

    

Option D is correct.                                   

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