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प्रश्न
A rubber ball changes its shape on pressing. Can it be called a solid?
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उत्तर
Yes. A solid has a certain shape and size. The shape of a rubber ball changes only if we squeeze it.
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संबंधित प्रश्न
Give one example of the diffusion of a solid in another solid.
Write whether the following statement is true or false:
If the container in which a gas is collected has an opening, the gas will flow out and spread itself indefinitely
Describe simple experiments to prove that solids have mass
Describe simple experiments to prove that gases have no definite volume or shape.
Explain the term ‘Interconversion of matter’. With reference to ice, water, and water vapour show diagrammatically the change of state of matter from solid to liquid to gaseous and back to the original state.
Complete the statement given below by selecting the correct word.
Solids and liquids have a definite ____ but gases do not.
Match the following.
| Srl. no. | A | B | C |
| i | Separation of visible undesirable components | Water mixed with chalk powder | Magnetic Separation |
| ii | Separation of heavier and lighter components | Sand and water | Decantation |
| iii | Separation of insoluble impurities | Iron impurities | Filtration |
| iv | Separation of magnetic components from non-magnetic components | Rice and stone | Hand-picking |
| v | Separation of solids from liquids | Husk and paddy | Winnowing |
Intermolecular forces of attractions are maximum in ______.
Gases have neither a definite shape nor a definite volume.
Give two examples of diffusion.
