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प्रश्न
Select those objects from the following which shine:
Glass bowl, plastic toy, steel spoon, cotton shirt
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उत्तर
Glass bowl and steel spoon are shining objects.
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संबंधित प्रश्न
Short Answer Type Question:
Mention some materials which are made up of paper.
Find the odd one.
brick, coir, silk cloth, pine apple
We cannot compress, cut or bend the rough materials easily.
Sugar does not dissolve in water.
Choose the odd one:
Smooth materials do not have ups and downs.
Paheli prepared a blue coloured solution of copper sulphate in beaker A and placed an iron nail in it. Boojho prepared a yellowish green solution of ferrous sulphate in beaker B and placed a copper wire in it. What changes will they observe in the two beakers after an hour?
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.
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 |
