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प्रश्न
Match the following.
| Iron | For making wires |
| Copper | Sewing needle |
| Tungsten | As a fuel for ignition in rocket |
| Boron | Making the filament of a bulb |
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उत्तर
| Iron | Sewing needle |
| Copper | For making wires |
| Tungsten | Making the filament of a bulb |
| Boron | As a fuel for ignition in rocket |
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संबंधित प्रश्न
Name the process by which the components of following mixtures can be separated.
- Iron and sulphur
- Ammonium chloride and sand
- Common salt from sea water
- Chaff and grain
- Water and mustard oil
- Sugar and water
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A set of mixture is
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Select the correct answer from the choice given below.
A compound
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State whether true or false. If false, correct the statement.
A compound cannot be broken into simpler substances chemically.
Complete the table
| Compound | Constituent elements |
| Sodium carbonate | Sodium, Carbon. Oxygen |
| Water | |
| Calcium oxide | |
| Sugar | Carbon, Hydrogen, Oxygen |
A compound has a fixed ______.
