Which of this following are physical change 1.melting of iron metal 2rusting of iron 3bending of an iron rod 4drawing a wire of iron
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Answer:rusting of iron
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Melting of iron metal, bending of an iron rod and drawing a wire of iron are physical changes because here state and shape of material are only changing.
While., Rusting of iron is a chemical change because a chemical reactn is taking place in iron metal and air, moisture which make a new compound as rust.
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