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प्रश्न
Materials which can be bent or stretched easily are called ______.
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उत्तर
Materials which can be bent or stretched easily are called Flexible.
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संबंधित प्रश्न
Very Short Answer Type Question:
Select a lustrous material out of the following substances.
Short Answer Type Question:
Why is water important for our body?
Find the odd one.
brick, coir, silk cloth, pine apple
Chalk dissolves in water.
Which among the following is an example of dull material?
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.
Fill in the blanks to complete the following paragraph.
The name of the product formed in the reaction of sulphur and ______ is sulphur dioxide gas. When sulphur dioxide is dissolved in ______, sulphurous acid is formed. The sulphurous acid turns ______ litmus paper to ______. Generally oxides of ______ are acidic in nature.
After completing the paragraph, write two questions which you can raise on the basis of this information.
lt was Paheli’s birthday. Her grandmother gave her two gifts made of metals, one old dull silver spoon and a pair of lustrous gold earrings. She was surprised to see the difference in the appearance of the two metals. Can you explain the reason for this difference?
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 |
