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)

NCERT Class X
Science - Exemplar Problems

Chapter_Chemical Reactions And Equations

2

Answers

2015-05-29T13:39:33+05:30
(d)  Combustion of LPG  -  is a chemical change.
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2015-05-29T14:09:17+05:30
(d) Combustion of Liquefied Petroleum Gas (LPG) - this is not a physical change , it is a chemical change as once it is burnt , the smoke particle cannot be changed  into Liquefied Petroleum Gas again.
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