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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
Water evaporates only at 100°C.
Evaporation takes place at ...............temperature.
Discuss the three states of matter solid, liquids and gas on the basis of molecular model.
Fill in the blank
The inter-molecular forces are the weakest in ...............
Fill in the blank
A solid is ............ rigid.
How do the solids, liquids, and gases differ in their following properties.
(a) Size
(b) Shape
(c) Density
Define interconversion of states of matter.
Multiple choice question.
Which of the following is a property of the liquids?
Fill in the blank with the correct word Given below.
From the three states of matter, _____ expand the least.
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 |
