Multiple choice Which of the following pairs of ‘polymer-its precursor’ is not correctly matched? Natural rubber-isoprene Buna S-butadiene and styrene Neoprene-isoprene Orlon-acrylonitrile Teflon-TFET Reveal answer Fill a bubble to check yourself C Correct answer Explanation Neoprene is synthetic rubber and prepared by the polymerisation of chloroprene as monomer units.