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प्रश्न
Give reasons for the following:
A bottle of perfume on opening evolves an odour which can be sensed over a long distance.
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उत्तर
A bottle of perfume on opening evolves an odour because gases diffuse very easily and odour spreads over a large distance.
संबंधित प्रश्न
A diver is able to cut through water in a swimming pool. Which property of matter does this observation show?
What are the characteristics of particles of matter?
Fill in the blank:
The change of a solid into a liquid is called melting or................
What is volume ?
What are fluids ? Give two examples.
For the following statement, say whether it describe a solid, a liquid or a gas.
Particles are quite close together.
The state of matter which has no definite shape or volume is called
- solid
- liquid
- gas
- water
What happens when a solid is heated ?
Fill in the blank
When a gas is cooled, its molecules ________ energy,
Define the Solid and give two examples.
