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प्रश्न
Sand paper is a good example for smooth materials.
विकल्प
True
False
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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?
Very Short Answer Type Question:
Name two objects which are made from opaque materials.
Short Answer Type Question:
What are the similarities between iron, copper, and aluminium?
Materials which can be bent or stretched easily are called ______.
Select those objects from the following which shine:
Glass bowl, plastic toy, steel spoon, cotton shirt
Sand settles down in the water.
Differentiate hard and soft materials.
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.
Match the objects given in Column I with the materials given in Column II.
| COLUMN I | COLUMN II | ||
| (a) | Surgical instruments | (i) | Plastic |
| (b) | Newspaper | (ii) | Animal product |
| (c) | Electrical switches | (iii) | Steel |
| (d) | Wool | (iv) | Plant product |
Differentiate among opaque, translucent and transparent materials, giving one example of each.
