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प्रश्न
Match the examples of changes in List I with the correct.
| List I | List II |
| 1. Expansion of a steel rod on heating | A: Physical change |
| 2. Rotting of eggs | B: Chemical change |
| 3. Milk turning sour | |
| 4. Tarnishing of copper | |
| 5. Separation of naphthalene from a mixture of naphthalene and sodium chloride. |
सारिणी
उत्तर
| List I | List II |
| 1. Expansion of a steel rod on heating | A: Physical change |
| 2. Rotting of eggs | B: Chemical change |
| 3. Milk turning sour | B: Chemical change |
| 4. Tarnishing of copper | B: Chemical change |
| 5. Separation of naphthalene from a mixture of naphthalene and sodium chloride. | A: Physical change |
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| Column 1 | Column II | ||
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