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प्रश्न
Give reasons for the following:
Solids have a definite shape and are highly rigid while gases have to definite shape and are least rigid.
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उत्तर
Solids have very closely packed atoms with minimum spaces between them while gases have atoms which are for apart with maximum spaces between them. Solids have a definite shape and are highly rigid while gases have no definite shape and are least rigid.
संबंधित प्रश्न
Define interconversion of states of matter. What are the two factors responsible for the change of states of matter?
What are fluids ? Give two examples.
Water cycle is an example of inter conversion of states of water. Explain.
Match the columns.
| (1) iron and gold | (a) molecules are very far apart |
| (2) melting | (b) pure substance |
| (3) intermolecular space | (c) non - metals |
| (4) compound | (d) the space between the molecules |
| (5) gases | (e) change from solid to liquid |
| (f) metals |
Give reason:
A drop of ink added to water in a glass turns whole water blue.
Bromine particles are almost twice as heavy as chlorine particles. Which gas will diffuse faster; bromine (vapour) or chlorine? Explain your answer.
Fill in the blank with the correct word Given below.
The space between atoms’ [molecules] of solids is ____
A measuring cylinder is filled with water to a particular mark. A piece of solid is immersed inside the measuring cylinder. State why the level of water in the measuring cylinder will rise up. If the solid is removed, what will be the new level of the water in the measuring cylinder? Give a reason for your answer.
Give a reason why solids and liquids co-exist at their melting points.
State the term which refers to the conversion of a substance on heating from.
- solid-state to liquid state
- liquid state to vapour state
- vapour state to liquid state
- liquid state to solid-state.
