which among the following are physical or chemical change
evaporation of petrol
burning of lpg
heating of iron rod to red hot
curding of milk
sublimation of solid ammonium chloride
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Answer:
evaporation of petrol is a physical change
burning of LPG is both a chemical change and a physical change because when LPG come out of the cylinder it changes into gas due to atmospheric pressure this is a physical change and the burning of LPG is chemical change
heating of iron rod to Red Hot is a chemical change
curding of milk is a chemical change
sublimation of solid Ammonium Chloride is a physical change
Answered by
2
Physical changes:
- evaporation of petrol
- heating of iron rod to red hot
- burning of LPG
Chemical change:
- curding of milk
- sublimation of solid ammonium chloride
- burning of LPG
Burning of LPG is both physical and chemical change as when the lpg comes out it is converted from a liquid state to gaseous state which is physical change.
When it burns in air that is chemical change
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