Question

Insulation of the electric wire is done by the polymer of
(A) isoprene
(B) neoprene
(C) Vinyl chloride
(D) Buta-1,3-diene

Answer 1

In order to know which polymer is used in the insulation of the electric wire, we must first have an idea about what an insulator is. Insulators are some substance or materials which will not allow the flow of electrons or charges freely.

Complete step by step answer:
Let us first understand about insulators. Insulators are some substance or materials which will not allow the flow of electrons or charges freely. Materials which have a very poor ability to conduct heat and electricity are known as the insulators.
Now let us see some of the properties of the insulators.
- The valence electrons present in the insulators are very tightly held and hence these electrons cannot move freely.
- High air permeability is one of the properties of the insulators.
- Large dielectric strength is also a property of an insulator.
The polymer which is prepared from the vinyl chloride by the process of polymerization is called polyvinyl chloride. Now let us see other uses of polyvinyl chloride:
- It is used in bottles.
- For food covering sheets
- for plumbing purposes
- for flooring
- inflammable products
- electrical cable insulation
- used in credit cards or debit cards.
From the above uses we can say that vinyl chloride is the polymer which is used in the insulation of the electric wire.
The correct option is option “C” .

Note: We have to note that when there are impurities present in an insulator then it can act as the weak conductor. For example, pure water is an insulator of electricity. But when the water is dirty, then it can act as the weak conductor of electricity.