_______ is an example of chemical change 1) Dissolution of salt in water . 2) Magnesium of iron . 3) hitting of iron till it becomes red hot . 4) rusting of iron
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Answer:
(4) rusting of iron is an example of chemical change
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Answer:
option(4)RUSTING OF IRON IS A CHEMICAL CHANGE.
Explanation:
DURING THIS REACTION, A COMPOUND CALLED RUST OR Fe2O3•32H2O (HYDRATED FERRIC OXIDE) IS FORMED and WE KNOW THAT IN THE CHEMICAL CHANGE, NEW PRODUCT IS FORMED and TOO THIS REACTION IS NOT REVERSIBLE.
HENCE, IT IS A CHEMICAL REACTION.
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