Which of the following are chemical changes?
(A)
Growth of a plant
(b)
Rusting of iron
(c)
Mixing of iron filings and sand
(d)
Cooking of food
(e)
Digestion of food
Freezing of water
lg Burning of a candle
Answers
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growth of a plant,rusting of iron,cooking of good , digestion of food , burning of candle are chemical changes
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Answer:
Rusting of Iron is the answer because - Corrosion of iron is called rusting. Rusting is a process in which iron metal reacts with moist air (water + oxygen) present in the atmosphere to form iron oxide, Fe2O3, which is reddish brown incolour.
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