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प्रश्न
Give one example of the diffusion of a solid in another solid.
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उत्तर
Diffusion of solid into another solid is an extremely slow process. This is because the particles of solids do not move from their fixed positions and only vibrate.
When two metal blocks are placed close to each other and are left undisturbed for a few years, the particles of one metal diffuse into the other.
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संबंधित प्रश्न
Name the smallest particle from which matter is made up.
Fill in the blanks:
Any matter which has a definite ______ but no definite shape is called a ______.
For the following statement, say whether it describes a solid, a liquid or a gas.
Particles move about very quickly but do not leave the surface
State the main physical properties of matter.
Describe simple experiments to prove that solids have mass
Filtration method is effective in separating ______ mixture.
Complete the given analogy.
Solid: Rigidity:: Gas: ______
Complete the given analogy.
Solid: Definite shape:: ______: Shape of the vessel.
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 |
Identify the state of matter based on the arrangement of the molecules.
