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State the property utilized in the follo...

State the property utilized in the following :
(i) Graphite is making electrodes
(ii) Electrical wire are coated with polyvinyl chloride (PVC) or rubber like materials.
(iii) Metal alloys are used in making bells and strings of musical instruments.

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(i) Graphite is a good conductor of electricity,it is cheap and insoluble in water, donot reacts with acids and bases. It is a non corrosive material. Due to these properties graphite is used as electrodes.
(ii) Poly vinyl chloride (PVC) or rubber like material are insulators and hence do not allow electrons to flow.
Hence these are used in coating the electrical wires.
(iii) Metals and metal alloys are generaly sonorous in nature.
They produce sound. Due to this property they are used for making bells and strings of musical instruments.
Metals can be used to make strings of musical instruments due to their ductility property because of which they can be drawn into strings or wires.
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