Q. Which of the following is used as non-stick coating for cooking utensils?
Answer: Teflon
Notes: The non-stick coating used mainly for coating cooking utensils is made using PTFE (polytetrafluoroethylene) that is also known by the name Teflon. Teflon is an inert polymer with high thermal and chemical resistance. Besides, it is hydrophobic: neither water nor water-containing substances wet it and it has one of the lowest coefficients of friction.