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प्रश्न
Define Intermolecular force of attraction.
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उत्तर
The molecules of matter are always in motion and attract each other with a force called intermolecular force of attraction due to which they are held together.
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संबंधित प्रश्न
Classify the following into solids, liquids and gases.
Oxygen, milk, common salt, wax, stone, water vapour, carbon-dioxide, sugar, mercury, coal, blood, butter, copper, coconut oil, kerosene.
Water cycle is an example of inter conversion of states of water. Explain.
Define matter. What is its composition?
What is a molecule?
Describe a simple experiment to illustrate that molecules are not at rest, but they constantly move.
Give a reason for the Electricity is not considered matter.
Give reason :
When an empty gas jar is inverted over a gas jar containing a coloured gas, the gas also spreads into the empty jar.
Multiple choice question.
A substance which can change its state
Identify the odd term out and explain.
Gold, silver, copper, brass
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 'Y' | A: Liquefaction |
| 2. Liquid 'Y' to its vapour 'Z' | B: Vaporization |
| 3. 'Z' to 'Y' | C: Melting |
| 4. 'Y' to 'X' | D: Solidification |
| 5. The temperature at which 'Y' changes to 'Z' | E: Melting Point |
| F: Boiling point |
