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प्रश्न
Which of the following statement is incorrect?
पर्याय
the particles of matter are very, very small
the particles of matter attract one another
the particles of some of the matter are moving constantly
the particles of all the matter have spaces between them
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उत्तर
The particles of some forms of matter move constantly
The statement that the particles of some forms of matter move constantly is incorrect because the particles of matter of all three states– solid, liquid and gas –are moving constantly. Although the particles of solids are fixed at their positions, they vibrate constantly.
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संबंधित प्रश्न
What are the characteristics of particles of matter?
Why do solids, liquids and gases differ in their physical states ?
Define the following terms.
Atom
Write whether the following statement is true or false.
The intermolecular force of attraction is the weakest in gases.
The state of matter which has no definite shape or volume is called
- solid
- liquid
- gas
- water
Fill in the blank
The molecules are at a greater distance in ______ compared to liquids.
What is the general name of :
- rigid form of matter ?
- fluid forms of matter ?
Differentiate the general properties of solids, liquids and gases in the form of a table — with reference to free surfaces.
‘Inter-particle attraction between atoms of gases is very weak’. State five properties of gases which correlate as a consequence of the weak inter-particle attraction between particles of gases.
Match the following.
| Property | Example |
| Breaks easily (Brittle) | Metal pan |
| Bends readily | Rubber band |
| Can be stretched easily | Cotton wool |
| Gets compressed easily | Mud pot |
| Gets heated readily | Plastic wire |
