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प्रश्न
Describe a simple experiment to prove that a copper wire conducts electricity, but a piece of coal does not.
उत्तर
Experiment to prove that a copper wire conducts electricity
- Take a copper, battery, bulb and loose wire.
- Join the circuit i .e. wire with the battery, copper and bulb as shown in the figure.
- We will observe that the bulb glows, as metal i.e. copper is the good conductor of electricity.
Experiment to prove that coal does not conducts electricity
- Take a coal, battery, bulb and wire.
- Join the circuit e. wire with battery, coal and bulb as shown in the figure.
- We will observe that the bulb will not glow, as non-metal — i.e. coal is bad conductor of electricity.
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संबंधित प्रश्न
Some properties are listed in the following Table. Distinguish between metals and non-metals on the basis of these properties
| Properties | Metals | Non-metals |
| 1. Appearance | Lustrous | Dull |
| 2. Hardness | Hard | Soft |
| 3. Malleability | Can be beaten into thin sheets | Cannot be beaten into thin sheets |
| 4. Ductility | Can be drawn into wires | Cannot be drawn into wires |
| 5. Heat Conduction | Good conductors of heat | Poor conductors of heat |
| 6. Conduction of Electricity | Good conductors of electricity | Poor conductors of electricity |
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Tick (√) the most appropriate answer.
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Name a metal which is poor conductor of electricity :
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two metallic oxides which are amphoteric
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- Ductile
- Conduct electricity
- Brittle
- Acidic Oxides
- Basic Oxides
- Discharged at anode
- Discharged at cathode
- Ionic chlorides
- Covalent chlorides
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- 1, 2 or 3 valence electrons
- 5, 6, 7 valence electrons
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Which metal occurs as a carbonate also gives the name of their respective ore.
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The element which shows properties of both metals and non-metals.
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______ is the only non-metal which conducts electricity.
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