Question

Which of the following are physical changes ?
(i) melting of iron metal
(ii) rusting of iron metal
(iii) bending of an iron rod
(iv) 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)

Answer 1

Answer:

c) - (i), (iii) and (iv)

Rusting of iron involves changing its chemical composition, which means it isn't a physical change.