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प्रश्न
Why liquids do not have definite shape?
उत्तर
Molecules of a liquid are held by weak intermolecular förces. This force is strong enough to hold the molecules together but not strong enough to hold them at fixed positions. As a result, liquids have a fixed volume but not shape.
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संबंधित प्रश्न
Write true or false For the following Statement
The molecules in a substance arc in random motion.
Distinguish between solids, liquids, and gases on the basis of their following properties :
(a) compressibility
(b) fluidity
(c) rigidity
(d) expansion on heating
Write whether the following statement is true or false
All solids, on heating, first change to the liquid and then to the gaseous state always.
Write whether the following statement is true or false.
The intermolecular force of attraction is the weakest in gases.
Write true or false for the statement. Rewrite the false statement correctly.
If the intermolecular space is more than the intermolecular force will be weaker.
Multiple choice question.
There are large intermolecular gaps in
What are the two main types of matter?
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 |
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 |
Define the term ‘Liquefaction of gases’.
