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Chemistry Grade 12 Unit 4: POLYMERS

national exam questions have come from this unit. It runs 27 pages; one careful study pass takes about 2.9 hours, and its difficulty is moderate among Chemistry units. Each section below lists the questions set from it, with the year, and opens the page that teaches it.

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4.1 Introduction to Polymers · read p. 214
Not asked in a national paper yet.
4.2 Polymerization Reactions · read p. 215
  • 2018 E.C., Q67 – What is the molar mass of a polyethylene sample, [—CH₂—CH₂—]n, when n = 4600?
  • 2018 E.C., Q69 – A student compared thermoplastic polymers and thermosetting polymers. Which of the following pairs is NOT correct about their difference?
  • 2018 E.C., Q68 – Which one of the following polymer-monomer pairs is INCORRECTLY matched?
  • 2017 E.C., Q3 – Which of the following polymer is used to make ropes, clothes, hair combs and stockings?
  • 2016 E.C., Q65 – Which of the following is a monomer of natural rubber?
  • 2016 E.C., Q64 – What are the two types of polymerizations?
  • 2016 E.C., Q13 – Which one of the following synthetic polymers is used to make squeeze bottles, plastic wrapping and electrical insulation?
  • 2015 E.C., Q70 – Why is vulcanization performed in natural rubber?
  • 2014 E.C., Q55 – Which monomers are used for the synthesis of Teflon?
  • 2013 E.C., Q21 – Natural polymers are
  • 2013 E.C., Q10 – One of the following is NOT among the chemical properties of silicon
  • 2012 E.C., Q64 – Why the name given NYLON 66 co-polymer? This is because
  • 2011 E.C., Q15 – Nylon is a/an___?
  • 2011 E.C., Q44 – Two types of polymer are shown below. Which of the following statements concerning these polymers is correct? [Figure: Two schematic drawings of polymer structures labeled X and Y. Diagram X shows three horizontal wavy p
  • 2011 E.C., Q8 – Which one of the following is NOT a condensation polymer?
  • 2011 E.C., Q16 – Which of the following is NOT a component of polysaccharides?
  • 2010 E.C., Q17 – Nylons are:-
  • 2010 E.C., Q15 – Which of the following is a natural polymer?
  • 2009 E.C., Q51 – Which of the following is the most abundant polysaccharide?
  • 2009 E.C., Q52 – What is the other name for polymethyl methacrylate (PMMA)?
  • 2009 E.C., Q50 – What type of polymerization occurs when amino acids react to form peptides and proteins?
  • 2009 E.C., Q53 – What is the monomer of polyvinyl chloride (PVC)?
  • 2008 E.C., Q23 – Which of the following statements about polyvinyl chloride is not correct?
  • 2008 E.C., Q24 – Which of the following is a natural polymer?
  • 2008 E.C., Q62 – A polysaccharide is a polymer made up of which kind of monomers?
  • 2007 E.C., Q51 – Bakelite is obtained from phenol by reacting with
  • 2007 E.C., Q59 – Natural rubber is a polymer of
  • 2006 E.C., Q52 – Which of the following is a natural polymer?
  • 2006 E.C., Q30 – Which pair of monomers forms polyesters?
  • 2006 E.C., Q48 – Which of the following is a synthetic rubber produced from caprolactam (CPL)?
  • 2006 E.C., Q18 – Which of the following is natural polymer?
  • 2005 E.C., Q45 – What are the raw materials required to synthesize nylon 6, 6, a specific king of nylon?
  • 2005 E.C., Q52 – Which of the following form of synthetic rubbers can be vulcanized to greatly enhance its mechanical strength?
  • 2005 E.C., Q54 – What are the two principal polysaccharide forms of starch?
  • 2005 E.C., Q73 – Which synthetic polymer is produced from caprolactam?
  • 2005 E.C., Q44 – What structural feature is usually needed to present in order for an addition polymer to be produced?
4.3 Classification of Polymers · read p. 224
Not asked in a national paper yet.