Which of the following statement (s) is/are false? P. Polysulfone is an example of homopolymers. Q. UFR is formed from the condensation reaction of urea and formaldehyde. R. Orlon is the brand name of polyacrylonitrile.

P. Polysulfone describes a family of thermoplastic polymers. A typical polysulfone is produced by the reaction of a diphenol and bis(4-chlorophenyl)sulfone, forming a polyether by elimination of sodium chloride. Q. Urea formaldehyde resin (UFR) is prepared from the condensation reaction of urea with formaldehyde. R. Orlon is the brand name of polyacrylonitrile, that is used mainly in the making of clothes and fabrics like sweaters, hats, yarns, rugs. Hence, only statement P is false.