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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. |
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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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संबंधित प्रश्न
Classify the following as chemical or physical change:
Rusting of almirah
Classify the following as chemical or physical change:
Dissolving common salt in water.
Changes in which only ______ properties of a substance change are called physical changes.
Write short answer.
Sublimation is classified as a physical change. Why ?
Is burning a physical change or a chemical change? Why?
Fill in the blank
Chemical change occurs as a result of __________ between two substances.
Write true or false
Decomposition of leaves is a fast change.
Sublimation is classified as a physical change. Why ?
Classify the following as physical or chemical change :
Formation of curd from milk
Differentiate between a physical change and a chemical change with reference to – Formation of products.
