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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
Water evaporates only at 100°C.
The process of a gas converting directly into solid is called vaporization.
At high altitudes, water boils above 100° C.
Fill in the blank
In a solid, the molecules ............................................ but they remain at their fixed positions.
Fill in the blank
The inter-molecular forces are the weakest in ...............
Why do solids, liquids, and gases differ in their physical states?
Fill in the blank
Liquids have no definite ...........
Name the phenomenon which cause the following change.
Formation of water vapour from water.
Give two examples for of the following
Substances which do not change their states.
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 |
