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Explain why the following are made of thermosetting plastics. 

(a) Saucepan handles.

(b) Electric plugs/switches/plug boards. 

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(a) Saucepan handles are made of thermosetting plastics because these plastics do not get softened on heating. Also, thermosetting plastics such as Bakelite are poor conductors of heat. So it is easier to handle the utensil while cooking. 

(b) Electrical plugs, switches and plug-boards are made up of thermosetting plastics because it is a bad conductor of electricity. It does not allow the electric current to pass through it, thus safe in using in electric appliances.

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