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प्रश्न
Define the following term of Molecule .
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उत्तर
Molecule — A molecule is a smallest part of a compound that exists independently.
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संबंधित प्रश्न
Define interconversion of states of matter. What are the two factors responsible for the change of states of matter?
Why do solids, liquids and gases differ in their physical states ?
For the following statement, say whether it describe a solid, a liquid or a gas.
Particles are quite close together.
Match the following
| Column A | Column B |
| (a) Solids | (1) Can flow in all directions. |
| (b) Sublimation | (2) The temperature at which a liquid changes into its gaseous state. |
| (c) Boiling point | (3) Any number of free surfaces. |
| (d) Gases | (4) Gaps between particles. |
| (e) Intermolecular space | ro(5) Change of state fm solid to gas. |
Give reason of A gas fills up the space available to it.
Name the three states of matter.
Each of the three states of matter has mass. Explain with the help simple experiments – that each state of matter has mass.
State in which of the three states of matter:
The movement of the particles is neither about their own positions nor in any random direction.
Match the characteristics of the three states of matter in List I with their correct answer from List II.
| List I | List II |
| 1. Have no definite shape, volume or free surface | A: Solids only |
| 2. Are highly compressible and least rigid | B: Liquids only |
| 3. Have a definite volume, no definite shape and are slightly diffusable | C: Gases only |
| 4. Are not compressible and have no diffusability | D: Liquids and gases only |
| 5. Have mass and occupy space | E: Solids and gases only |
| F: Solids, liquids and gases |
Air is not compressible.
