Which among the following are physical or chemical changes?
(a) Evaporation of petrol
(b) Burning of Liquefied Petroleum Gas (LPG)
(c) Heating of an iron rod to red hot.
(d) Curdling of milk
(e) Sublimation of solid ammonium chloride
NCERT Class X
Science - Exemplar Problems
Chapter_Chemical Reactions And Equations
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(a), (c), (e) are physical changes.
(b), (d) are chemical changes.
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(b), (d) are chemical changes.
hoped helped u :))
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