Question

Which polymer is used in non-stick cooking vessels?
A.Polythene
B.Isoprene
C.Teflon
D.Neoprene

Answer 1

Basically, a polymer is a large molecule or a macromolecule which essentially is a combination of many subunits. Polymers may be naturally found in plants and animals or can be man-made also. Different polymers have a number of unique physical and chemical properties due to which they find usage in everyday life.

Complete step by step answer:
Polymers are all created by the process of polymerization wherein their constituent elements are known as monomers. Basically, a monomer is a molecule that forms the basic unit for polymers. The monomers further bind to other monomers to form repeating chain molecules through a process known as polymerization. Further, on the basis of source we have natural, synthetic and semi-synthetic polymers. On the basis of the monomer chain, we have linear, branched chain and cross-linked polymers and on the basis of molecular forces we have elastomers, fibers, thermoplastics and thermosetting polymers.
Now, Teflon is a polymer used to deposit non-stick coatings on cookware. It was first made in the year 1930s to create a non-reactive, nonstick surface. It is known for its use in cookware, although it can also be used to coat other materials like wires or fabrics to make them waterproof. It is actually made up of a chemical compound named tetrafluoroethylene. It is produced by undergoing the free radical polymerization. The equation involved in this process is as shown:
$n{F_2}C = C{F_2} \to - {({F_2}C - C{F_2})_n}$

Hence, option C is correct.

Note: PTFE film is also widely used in the production of carbon fiber composites as well as fiberglass composites. Moreover, it’s extremely high bulk resistivity makes it an ideal material for fabricating long life electrets, the electrostatic analogues of permanent magnets.