heating of iron rod name the change
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Heating of iron rod to red color is a chemical change as it can again come back from red to its normal color after being cooled.... Answer: (a) Evaporation of petrol is a physical change because no new chemical substance is formed. (b) Burning of LPG is a chemical change because on burning, LPG forms CO2and H2O.
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chemical change is your answer
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