Multiple choice

Why are electric plugs, switches and plug boards made of thermosetting plastics?

  1. Because thermosetting plastics are not biodegradable.

  2. Because thermosetting plastics cannot be deformed, and these are poor conductors of heat and electricity.

  3. Because thermosetting plastics have high tensile strength.

  4. Because thermosetting plastics have light weight, lower price, and these can be handled easily.

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Electric plugs, switches etc. should be made of such materials, which neither allow the heat nor the current to pass through. Also, they should not melt down on heating. Thermosetting plastics possess these properties. Therefore, they are used for the same purpose. 

Keep practicing — related questions