PVC is obtained by the polymerisation of A. Propane B. Vinyl chloride C. Styrene D. Acetylene

Propane
Vinyl chloride
Styrene
Acetylene

The correct answer is B. Vinyl chloride.

Vinyl chloride is a chemical compound with the formula CH2=CHCl. It is a colorless, flammable gas with a characteristic sweet odor. It is used to make polyvinyl chloride (PVC), a common plastic.

Propane is a hydrocarbon with the formula C3H8. It is a colorless, odorless gas that is used as a fuel.

Styrene is a hydrocarbon with the formula C8H8. It is a colorless, flammable liquid that is used to make polystyrene, a common plastic.

Acetylene is a hydrocarbon with the formula C2H2. It is a colorless, flammable gas that is used to make a variety of chemicals, including plastics, rubber, and fibers.

PVC is obtained by the polymerization of vinyl chloride. In this process, many vinyl chloride molecules are joined together to form a long chain. This chain is then cross-linked, which makes it strong and durable. PVC is used to make a variety of products, including pipes, fittings, windows, and siding.