Question

Which one of the following is used to make ‘non-stick’ cookware?
(A) Polystyrene
(B) PVC
(C) Polyethylene terephthalate
(D) Polytetrafluoroethylene

Answer 1

Hint: Polymers are basically long chain compounds formed by attaching and forming long chains of single or multiple polymers. Different types of polymers are created keeping the practical usage of the polymer in mind.

Complete step by step answer:
As said in the hint, each polymer is created keeping a set number of use cases in mind. Let us understand the use of cases for the polymers that have learn given in the potions:

(A) Polyethene: Polyethene is a long chain polymer of a monomer named ethylene. Polyethene finds its use case in being used as a building material for durable goods. It is used in producing a wide range of products like plastic parts, films, tubes, tanks etc. however, it is not used in non-stick cooking vessels.

(B) PVC: Polyvinyl chloride, a synthetic resin made from polymerization of vinyl chloride. It is versatile and it can be as rigid as industrial pipes as pliable as plastic wrap, and as thin and flexible as wall-covering. It can also be completely clear or matched to any colour desired. It’s applications include building and construction, health care, electronics, automobile, automobile and other sectors ranging from piping and siding, blood bags and tubing, to wire and cable insulation, windshield system components. However, it is not used for non-stick cookware.

(C) Poly ethylene terephthalate: PETE is a general purpose thermoplastic polymer which belongs to the polyester family of polymers. They are known for their excellent combination of properties such mechanical, thermal, chemical resistance as well as dimensional stability. It is strong, clear and light weight plastic that is widely used for packaging foods and beverages, especially. Convenience sized soft drinks, juices and water.

(D) Polytetrafluoroethylene: Teflon is also known as PTFE. It is a non-biodegradable polymer and is completely resistant to water. This makes it ideal to be often used as a cooling on metals to prevent corrosion.
Hence, it can be used as a coating for non-stick cooking vessels because of this hydrophobic behaviour.

So, the correct answer is Option D .

Note:
Teflon is a brand name of a chemical coating, PTEF. It’s known for its use in cookware, although it can also be used to coat other materials like wires or fabrics to make them waterproof.