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प्रश्न
Give two examples for each type of matter
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उत्तर
- Natural matter: It occurs in nature and can be used to make more useful substances, e.g., wood, coal, silk, water, stone, cotton, jute, cereals, fruits, etc.
- Man-made matter : It is produce artificially from natural matter, e.g., plastics, soaps, detergents, medicines, glass, nylon, steel, ceramic, etc.
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संबंधित प्रश्न
Fill in the blank
In a solid, the molecules ............................................ but they remain at their fixed positions.
Distinguish between solids, liquids, and gases on the basis of their following properties :
(a) compressibility
(b) fluidity
(c) rigidity
(d) expansion on heating
Explain the change of a liquid into a gas at a constant temperature.
Why liquids do not have definite shape?
For the following statement, say whether it describes a solid, a liquid, or a gas.
Particles are far apart and move in all directions.
Give two examples for of the following
Substances which sublime.
Select natural and man-made matter from the following list:
Wood, plastic, silk, medicines, detergents, coal, water, ceramic, cotton, glass, nylon, fruits.
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 |
Gas like the state of Matter that exists at extremely cold temperatures used in the field of cryogenics.
