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प्रश्न
Select natural and man-made matter from the following list:
Wood, plastic, silk, medicines, detergents, coal, water, ceramic, cotton, glass, nylon, fruits.
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उत्तर
Natural matter: Wood, silk, coal, water, fruits, cotton
Man-made matter: Plastic, medicines, detergents, ceramic, glass, nylon.
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संबंधित प्रश्न
Give the molecular model for a solid and use it to explain why a solid has a definite volume and a definite shape.
Water cycle is an example of interconversion of states of water. Explain.
What happens when a solid is heated?
Give a reason for the Pure substances have fixed melting or boiling points.
Write true or false for the statement. Rewrite the false statement correctly.
Solids can be compressed easily.
Name the three states of matter and define them.
State what would you observe if
(a) sugar is added to pebbles take in a plastic beaker
(b) sand is added to glass balls in a beaker. What would you conclude from this imaginative demonstration?
Fill in the blank with the correct word Given below.
From the three states of matter, _____ expand the least.
Match the characteristics of the three states of matter in List I with their correct answer from List II.
| List I | List II |
| 1. Are highly rigid and have a definite shape | A: Solids and gases only |
| 2. Have no definite shape | B: Solids only |
| 3. Have definite volume but no definite shape | C: Liquids and gases only |
| 4. Are highly compressible and least rigid | D: Gases only |
| 5. Have no definite volume | E: Solid, liquids and gases |
| 6. Have no definite shape and volume |
F: liquids only |
| 7. Occupy space | G: Solids and liquids only |
| 8. Are not compressible | |
| 9. Are slightly compressible | |
| 10. Have mass |
Gas like the state of Matter that exists at extremely cold temperatures used in the field of cryogenics.
