Polymer

Which of the following is identical for propene and

polypropene?

• Density

• Empirical formula

• Melting point

• Relative molecular mass

Polymerisation of chloroethene forms

• Polyethene

• Polypropene

• Polystyrene

• Polyvinyl chloride

Which of the following is a natural polymer?

• Polystyrene

• Polypropene

• Polyisoprene

• Polyphenylethene

A plumber was requested to replace the leaked water pipes

with durable materials which do not rust easily. Choose the

most suitable material that can be used by the plumber.

• Terylene

• Perspex

• Polyethene

• Polyvinyl chloride

Which of the following forms a condensation polymer?

• CH₃CH=CH₂

• CH₃CH₂NH₂

• HOCH₂CH₂COOH

• CH₃CH₂CH₂COOH

Which of the following is the monomer of the polymer?

• Ethene

• Propene

• Butene

Which of the following occurs during vulcanisation of rubber?

• Protein membrane is covered with hydroxide ions

• Cross-links are formed between chains of polyisoprene

• Long chains of rubber polymers are entangled randomly

• Addition polymerisation takes place when isoprene

  monomers combine with each other

Latex can be kept in liquid state by adding

• Formic acid

• Ethanoic acid

• Ammonium sulphate

• Ammonium hydroxide

Which of the following is the chemical name for the monomer

of natural rubber according to IUPAC nomenclature?

• 2-methylbut-1,4-diene

• 2-methylbut-1,3-diene

• 3-methylbut-1,3-diene

• 3-methylbut-2,3-diene

Vulcanised rubbers are harder than unvulcanised rubbers

because the polymers of vulcanised rubbers are

• negatively-charged

• held by sulphur cross-links

• combined to form longer chains

• arranged in an orderly manner