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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
Define of intermolecular force of attraction.
Define of Diffusion.
Name the smallest particle from which matter is made up.
Give reason for the following.
Gases can be compressed easily.
Give an experiment to explain that there are intermolecular spaces between water molecules.
Write true or false for statement. Rewrite the false statement correctly.
The smallest part of an element capable of independent existence 4s called an atom.
Write true or false for statement. Rewrite the false statement correctly.
The intermolecular space in a gas is almost negligible.
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 Vapour [or gas] into a liquid With special reference to inter-particle space & interparticle attraction at the different stages of conversion.
The kinetic energy of molecules in helium is ______ compared to the kinetic energy of molecules in water.
