Which statement is correct about poly(chloroethene)?

• It has the empirical formula CHCl

• It decolourises bromine water.

• Its brittleness is reduced by plasticisers.

• Its polymer chain contains alternate single and double bonds.

This structure shows a section of a polymer chain formed from the random polymerisation of two different monomers.

Which pair of monomers could produce this polymer?

• CH₂=CHF and CH₂=CHCF₃

• CH₂=CH₂ and CHF=CHCF₃

• CH₂=CH₂ and CH₂=CHCF₃

• CH2=CHF and CHCF3=CHF

The repeating unit of a polymer is shown

Which of the following molecules would form a polymer containing this repeating unit?

• But-1-ene

• E-but-2-ene

• Z-but-2-ene

• Methylpropene

For this question refer to the reaction scheme.

Which one of the following statements is not correct?

• Reaction of W with sodium cyanide followed by hydrolysis of the resulting product gives propanoic acid.

• Mild oxidation of Z produces a compound that reacts with Tollens’ reagent, forming a silver mirror.

• Z reacts with ethanoic acid to produce the ester propyl ethanoate.

• W undergoes addition polymerisation to form poly(propene).

The correct name for the alkene monomer which forms the polymer shown is

• 2-methyl-3-ethylpropene

• 2-methylpent-2-ene

• 2-methylpent-3-ene

• 4-methylpent-2-ene

Which one of the following does not contain any delocalised electrons?

• poly(propene)

• benzene

• graphite

• sodium