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प्रश्न
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 |
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उत्तर
| No. | Place | Name of the thing | Material used for making the thing |
| 1 | Study room | Table, chair, books pens, pencils, table lamp, computer, fan | Wood, plastic, paper, glass, bakelite, connecting wires made of metal and plastics |
| 2 | Drawing room | Sofa, table, chairs, fan, curtains, windows etc. | Wood, cloth, coir, paint, plastics, aluminium, glass etc. |
| 3 | Kitchen | Taps, wash basin, cupboards, utensils, heating vessels strainer, containers aqua pure etc | Steel, aluminium, glass, china clay, iron, plastic, copper, stainless steel, brass etc |
| 4 | bathroom | Taps, tubs, mugs, tooth brush, tooth paste, soap, pail etc. | Iron, brass, stainless steel, plastics etc |
| 5 | Any other place | Scooter, car, road, rooms, trucks, shops | Iron, rubber, coaltar, bricks, wood, plastics, clothes. |
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संबंधित प्रश्न
Give reasons:
A wooden table should be called a solid.
Give one difference between atoms and molecules.
Fill in the blanks:
Any matter which has a definite ______ but no definite shape is called a ______.
Write whether the following statements are true or false:
Only water can exist in three different states
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
For the following statement, say whether it describes a solid, a liquid or a gas.
Particles are quite close together
Describe simple experiments to prove that liquids have mass
State the property of the following substance.
Manganese dioxide, a catalyst which alters the rate of a chemical reaction is black in colour.
Discuss briefly on three states of matter.
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 |
