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प्रश्न
A gas has neither a definite volume nor a definite shape. Describe the molecular model to explain it.
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उत्तर
Here the molecules are far apart from each other i.e. have the greatest intermolecular distance which results in the weakest intermolecular forces of attraction. The molecules as are not
bound by any strong force move about freely and thus gases do not have a definite shape and also do not have any definite volume.
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संबंधित प्रश्न
The process of a gas converting directly into solid is called vaporization.
Write true or false For the following Statement
The molecules in a substance arc in random motion.
Fill in the blank
A solid exerts pressure .....................
How do the solids, liquids, and gases differ in their following properties.
(a) Size
(b) Shape
(c) Density
Give a reason for the Pure substances have fixed melting or boiling points.
Name the phenomenon which cause the following change.
Disappearance of camphor.
Multiple choice question.
A solid is a state of matter that has
Multiple choice question.
Gases
Give two examples for each type of matter
Match the arrangement of atoms in the three states of matter in List I with the correct state in List II.
| List I | List II |
| 1. Arrangement of atoms is far apart | A: Solids |
| 2. Force of attraction between atoms is very strong | B: Liquids |
| 3. Movement of atoms is in any random direction | C: Gases |
| 4. Particles diffuse very easily | |
| 5. Particles show movement about their own position |
