The teflon plastic is prepared by the polymerisation of A. ethylene B. acetylene C. benzene D. tetrafluoro ethylene

The correct answer is D. Teflon is a polymer of tetrafluoroethylene (TFE). It is a white, non-flammable, and chemically inert material that is used in a variety of applications, including cookware, gaskets, and electrical insulation.

Ethylene is a colorless, flammable gas that is used to produce a variety of polymers, including polyethylene, polypropylene, and polyvinyl chloride.

Acetylene is a colorless, flammable gas that is used to produce a variety of chemicals, including acetaldehyde, acetic acid, and vinyl chloride.

Benzene is a colorless, flammable liquid that is used to produce a variety of chemicals, including styrene, toluene, and xylene.