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प्रश्न
Sand paper is a good example for smooth materials.
विकल्प
True
False
MCQ
सत्य या असत्य
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उत्तर
Sand paper is a good example for smooth materials- False.
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संबंधित प्रश्न
Very Short Answer Type Question:
Is oil soluble in water?
Short Answer Type Question:
Mention some materials which are made up of paper.
Find the odd one.
Umbrella, sponge, rain coat, jerkin
Match the objects that are made of the same material.
| A | B | C |
 |
 |
 |
 |
 |
 |
 |
 |
 |
Sugar does not dissolve in water.
Choose the odd one:
Smooth materials do not have ups and downs.
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 |
Some of the following statements are incorrect. Find the incorrect statements and correct them.
- The property of metals by virtue of which they can be drawn into wires is called ductility.
- Metals are good conductors of electricity but poor conductor of heat.
- Articles made up of metals produce ringing sound when struck hard.
- Oxides of non-metals and metals are acidic in nature.
- A less reactive metal displaces a more reactive metal from its salt solution in water.
Pick one material from the following which is completely soluble in water.
