|
Pregunta
|
Respuesta correcta
|
Wich material is a good electrical conductor :
|
cooper |
wich propetydescribes a material s resistance to scratching :
|
hardness |
wich of these is a ceramic materials :
|
glass |
wich material is usually used to make electrical cable insulation :
|
plastic |
what is the main raw material used to make paper :
|
wood |
|
Pregunta
|
Respuesta correcta
|
wich material is magnetic :
|
iron |
which property allows a material to return to its original shape after being deformed :
|
elasticity |
which of the following materials is obtained from petroleum :
|
plastic |
which material is most suitable for making windows :
|
glass |
which property of plastic makes it electrical insulation :
|
electrical insulation |
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