Which of the following is used in non-stick pans?

The correct answer is option 3. Teflon.

Teflon is the material commonly used in non-stick cookware. Teflon is a brand name for polytetrafluoroethylene (PTFE), which is a synthetic fluoropolymer. It is known for its excellent non-stick properties, high heat resistance, and low coefficient of friction. When applied as a coating on cooking surfaces like pans and pots, it prevents food from sticking during cooking and makes cleanup easier. Due to its unique properties, Teflon has become a popular choice for non-stick cookware in households and commercial kitchens.

Let us briefly discuss the other options:

HDP (High-Density Polyethylene) and LDP (Low-Density Polyethylene) are types of polyethylene, which are commonly used in various plastic products such as containers, bags, and bottles. However, they are not used in non-stick pans.

Orlon is a brand name for acrylic fiber, which is used in textiles for applications like clothing, blankets, and upholstery. It is not used in non-stick pans.

Teflon (polytetrafluoroethylene) is the material specifically designed and widely used in non-stick cookware, making it the correct choice among the options provided.