| Which of the following are physical changes? (NCERT Exemplar) |
| I. Melting of iron metal |
| II. Rusting of iron |
| 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
Correct Answer: C
Solution :
[c]| Options (I) Melting of iron metal, (III) |
| Bending of an iron rod and (IV) Drawing a wire of iron metal are physical changes, because in three processes, iron changes its form, not the chemical composition. |
| In rusting of iron, its chemical composition is changed. |
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