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प्रश्न
What are the three states of matter ? Define each of them with two examples.
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उत्तर
The three states of matter are solids, liquids and gases :
- Solids - A solid has a definite shape and definite volume.
Example – wood, stone, iron, ice etc. - Liquid - A liquid has a definite volume but not definite shape.
Example - water, juice, milk, oil, etc. - Gases - A gas neither has definite shape nor a definite volume.
Example - air, hydrogen, oxygen, watervapour etc.
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संबंधित प्रश्न
State the main postulates of kinetic theory of matter.
Define of Brownian motion.
Name the smallest particle from which matter is made up.
What is the relation between intermolecular space and intermolecular force ?
Define the following term.
Molecule
Give reason:
The odour of scent spreads in a room.
Give an experiment to explain that there are intermolecular spaces between water molecules.
Fill in the blank:
When a gas is cooled, its molecules.......... energy.
State the main postulates of the kinetic theory with special reference to – Inter-particle attraction.
With reference to inter-conversion of matter – on the basis of kinetic theory – explain in brief the conversion of A solid into a liquid With special reference to inter-particle space & interparticle attraction at the different stages of conversion.
