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प्रश्न
Which of the following statements is not true?
पर्याय
Materials are grouped for convenience.
Materials are grouped to study their properties.
Materials are grouped for fun.
Materials are grouped according to their uses.
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उत्तर
Materials are grouped for fun.
Explanation:
Materials are not grouped for fun. They are grouped for convenience, to study their properties and according to their uses in systematic manner.
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संबंधित प्रश्न
Very Short Answer Type Question:
List three liquids which are transparent.
Materials which can be bent or stretched easily are called ______.
We cannot compress, cut or bend the rough materials easily.
Look at the pictures and identify the materials by which they are made of:
(paper, clay, glass, wood, plastic, metal rubber, wax
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| ____________ | ____________ | ____________ | ___________ | _____________ |
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| ____________ | ____________ | ____________ | ____________ | ____________ |
Match the objects that are made of the same material.
| A | B | C |
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Test the flexibility.
Give one plastic scale and a wooden scale to the students. Ask them to bend. Tabulate their observation (bends, does not bend).
| Plastic Scale | Wooden Scale |
| ______ | ______ |
When can you say a material is waterproof material?
Sand settles down in the water.
Choose the odd one:
Match the substances in Column A with their applications given in Column B.
|
Column A |
Column B |
| (a) oxygen | (i) for making crackers |
| (b) copper | (ii) for disinfecting water |
| (c) sulphur | (iii) all living beings inhale during breathing |
| (d) iron | (iv) for making electric wires |
| (e) chlorine | (v) for making rails |
