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प्रश्न
Stone is transparent, while glass is opaque.
पर्याय
True
False
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उत्तर
This statement is False.
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संबंधित प्रश्न
Very Short Answer Type Question:
List three liquids which are transparent.
Long Answer Type Question:
‘Grouping of objects helps the shopkeeper.’ Justify the statement.
Gold and diamond are the examples of _________ materials.
A piece of wood floats on water.
Which among the following is an example of dull material?
Differentiate hard and soft materials.
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.
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 |
