Which of the given polymer  is used in modern non-stick cookware and the flat end of an electric iron?

Teflon

The correct answer is option 1. Teflon.

Teflon is the trade name for polytetrafluoroethylene (PTFE), which is a synthetic polymer belonging to the class of fluoropolymers. It is known for its non-stick properties and is commonly used as a coating for cookware, including frying pans and baking sheets. The non-stick quality of Teflon arises from its low surface energy and the strong carbon-fluorine bonds in its molecular structure, which prevent food and other substances from sticking to its surface.

In the case of electric irons, Teflon is often used as a coating on the flat end or soleplate. This helps reduce friction between the iron and the fabric being pressed, making it easier for the iron to glide smoothly and preventing sticking or scorching of the fabric.

In summary, Teflon is chosen for these applications due to its excellent non-stick properties and resistance to high temperatures, making it a popular choice for cookware and iron coatings.