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प्रश्न
When a stone is dipped in a glass containing some water, the level of water rises but when a spoon of sugar is added to it and stirred, the water level does not rise?
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उत्तर
When a stone is dipped in a glass of water, the water level rises because the stone is a bigger object that cannot be dissolved and adjusted between the water's intermolecular gaps. However, when a spoonful of sugar is added and stirred, the water level does not rise because the sugar particles are smaller and move between the intermolecular spaces in water molecules.
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संबंधित प्रश्न
Fill in the blank:
Liquids have no definite ............
Write whether the following statement is true or false.
Intermolecular force of attraction is greater in gases than in liquids.
For the following statement, say whether it describe a solid, a liquid or a gas.
Particles are quite close together.
A substance which can change its state
- wood
- oxygen
- paper
- cloth
Write whether the following statement are true or false.
Solids have the largest inter-molecular space.
A piece of chalk can be broken into small particles by hammering but a piece of iron cannot be taken into small particles by hammering. Which characteristic of the particles of matter is illustrated by these observations?
Differentiate the general properties of solids, liquids and gases in the form of a table — with reference to density.
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 |
Complete the statement by filling the blank with the correct word given below.
In naphthalene, the inter-particle attraction is _______.
Water obtained from tube wells is usually ______ water.
