Which of the following are physical changes?- Melting of iron metal
- Rusting of iron
- Bending of an iron rod
- Drawing a wire of iron metal
(a) (i), (ii) and (iii)
(b) (i), (ii) and (iv)
(c) (i), (iii) and (iv)
(d) (ii), (iii) and (iv)
Correct Answer: (c) (i), (iii) and (iv)
Explanation: Rusting of Iron is a chemical change because rusting causes the formation of a new compound. All other are examples of physical changes where no new compounds are formed.
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