Which of the following is not a physical change

Asked by admin @ 10/08/2021 in Chemistry viewed by 342 People

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

Answered by admin @ 10/08/2021

(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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