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Which of the following are chemical cha...

Which of the following are chemical changes ?
(a) growth of a Plant
(b) Rusting of Iron
( c) Mixing of Iron Filing and sand
(d) Cooking of Food
( e) Digestion of food
( f) Freezing of water
( g) Burning of Candle.

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Chemical Changes :- Growth of Plants , Rusting of Iron , Cooking of Food , Digestion of Food , Burning of Candle
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