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प्रश्न
One kind of matter can be distinguished from another by its physical properties and chemical properties.
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उत्तर
Physical Properties— They are those properties which include state, colour, odour, density etc.
Chemical Properties— They are properties which include reactions of different materials with different chemicals.
संबंधित प्रश्न
The temperature of a substance remains unaffected during its change of state.
Evaporation takes place at ...............temperature.
Write down five general properties of solids, liquids, and gases.
Give a reason for the We need to classify things.
Write true or false for the statement. Rewrite the false statement correctly.
The intermolecular space in a gas is almost negligible.
For the following statement, say whether it describes a solid, a liquid, or a gas.
Particles are quite close together.
Name the phenomenon which cause the following change.
Formation of water vapour from water.
Name the three states of matter and define them.
State the correct term from A, B, C, D, E, or F in List II which represents the change of state of matter or its relevant property from List I.
| List I | List II |
| 1. Solid 'X' to a Liquid 'X' | A: Condensation |
| 2. Liquid 'Y' to its vapour 'Z' | B: Vaporization |
| 3. 'Z' to 'Y' | C: Melting |
| 4. 'Y' to 'X' | D: Freezing |
| 5. The temperature at which 'Y' changes to 'Z' | E: Melting point |
| F: Boiling point |
Define the term ‘Liquefaction of gases’.
