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प्रश्न
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 |
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उत्तर
| Srl. no. | A | B | C |
| i | Separation of visible undesirable components | Rice and stone | Hand-picking |
| ii | Separation of heavier and lighter components | Husk and paddy | Winnowing |
| iii | Separation of insoluble impurities | Water mixed with chalk powder | Filtration |
| iv | Separation of magnetic components from non-magnetic components | Iron impurities | Magnetic Separation |
| v | Separation of solids from liquids | Sand and water | Decantation |
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संबंधित प्रश्न
Explain why, the diffusion of a solid in another solid is a very slow process.
State two characteristic properties of a solid.
Name the smallest particle from which matter is made up.
Fill in the blanks:
______ and ______ can flow.
For the following statement, say whether it describes a solid, a liquid or a gas.
Particles are far apart and move in all directions
To identify materials of common use
Procedure – Just move around in your house – in the drawing room, sitting room, bedroom, kitchen, bathroom etc. Identify the things and All in the blanks in the table given below
| No. | Place | Name of the thing | Material used for making the thing |
| 1 | Study room | ||
| 2 | Drawing room | ||
| 3 | Kitchen | ||
| 4 | bathroom | ||
| 5 | Any other place |
Matter in any state is composed of particles. Compare the three states of matter i,e. solids, liquids, and gases with reference to:
(a) intermolecular space
(b) the intermolecular force of attraction
(c) movement of particles
State the property of the following substance.
Manganese dioxide, a catalyst which alters the rate of a chemical reaction is black in colour.
A rubber ball changes its shape on pressing. Can it be called a solid?
What is the physical state of water at 250°C.
