A LevelChemistryOCRExam Questions6. Organic Chemistry & AnalysisPolymers

Polymers (OCR A Level Chemistry A): Exam Questions

Exam code: H432

2 hours28 questions

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Polymers

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1
1 mark

Which pair of compounds will not form a condensation polymer?

  • A dicarboxylic acid and a diamine

  • An amino acid and a carboxylic acid

  • A dicarboxylic acid and a diol

  • Two amino acids

Choose your answer

2
1 mark

The structure below shows the repeating pattern of a polymer.

7-6-q-2-mcq-al-chem

Which pair of compounds could react rapidly to form this polymer?

  • Butane-1,4-diol and propanedioic acid

  • Propane-1,3-diol and butanedioic acid

  • Butanoyl chloride and propane-1,3-diol

  • Propane-1,3-diol and butanedioyl dichloride

Choose your answer

3
1 mark

Which compound can form a condensation polymer by itself?

  • HOOCCH2CH2COOH

  • NH2C6H4NH2

  • COCl CH2NH2

  • CH2OHCH2COOCH2OH

Choose your answer

4
1 mark

What are the products of the alkaline hydrolysis of a polyester?

  • Dicarboxylic acids and compounds with 2 ammonium ion groups

  • Dicarboxylic acid salts and diamines

  • Diols and dicarboxylic acids 

  • Diols and dicarboxylic acid salts

Choose your answer

5
1 mark

The structure below shows the repeating pattern of a polymer.

addition-polymer

Which pair of compounds could react to form this polymer?

  • CH2OHCF(CF3)OH and HOOCCF2CF2COOH

  • CH2=CFCF3 and C2F4

  • CH3C(CF3)HF and CF2=CF2

  • CF3CF=CF2 and CF2HCH3

Choose your answer

1
1 mark

The repeating unit of a polymer is shown.

Chemical structure diagram of a polymer showing alternating aromatic rings connected by amide groups, illustrating a polyamide chain.

Which monomer or pair of monomers could be used to make this polymer?

  • Benzene-1,4-dicarboxylic acid and benzene-1,3-diamine

  • Benzene-1,4-dicarboxylic acid only

  • Benzene-1,4-dicarboxylic acid and benzene-1,4-diamine

  • Benzene-1,3-dicarboxylic acid and benzene-1,4-diamine

Choose your answer

2
1 mark

The repeating unit of a polyester is shown.

Chemical structure of poly(ethylene terephthalate) showing carbon, hydrogen, and oxygen atoms, with a benzene ring and ester linkages.

Which statement explains why plastics made from this polyester only soften at high temperatures?

  • The polymer chains contain strong carbon-carbon bonds

  • The polymer chains contain hydrogen bonding and London dispersion forces between them

  • The polymer chains contain permanent dipole-dipole forces and London dispersion forces between them

  • The polymer chains contain strong carbon-oxygen bonds

Choose your answer

3
1 mark

Which polymer is most likely to biodegrade in landfill after several years?

  • PVC

  • Polyethene

  • Teflon

  • Nylon

Choose your answer

4
1 mark

Part of the Kevlar ® polymer chain is shown.

Chemical structure of Kevlar, showing alternating benzene rings connected by amide groups, illustrating its linear polymer chain.

Which monomer or pair of monomers could be used to make Kevlar ®?

  • Benzoic anhydride and 1,4-diaminobenzene

  • 1,4-benzenedicarbonyl dichloride and 1,4-diaminobenzene

  • Benzene-1,4-dicarboxylic acid and 4-aminobenzoic acid

  • 4-aminobenzoic acid only

Choose your answer

5
1 mark

The structure of the polymer PGLA is shown below.

Chemical structure of the polymer PGLA.

Which compound will be formed from the acid hydrolysis of PLGA?

  • 2-hydroxypropanoic acid 

  • 1-hydroxypropanoic acid 

  • Ethanoic acid 

  • Propanoic acid 

Choose your answer

6
1 mark

A section of a condensation polymer is shown below.

Chemical structure of a polymer with amide links.

Which monomers react to form this polymer?

  • 3-aminopropanoic acid and aminoethanoic acid

  • 2-aminopropanoic acid and aminoethanoic acid

  • 3-aminobutanoic acid and aminoethanoic acid

  • Methylamine, ethanoic acid, and propanoic acid

Choose your answer

1
1 mark

What is the empirical formula of a four-carbon molecule that forms a polymer with ClOC(CH2)8COCl?

  • C2H6N

  • C2H3O

  • C4H9ON

  • C4H9O2N

Choose your answer

2
1 mark

Which polymer exhibits the strongest type of intermolecular force?

  • PET

  • PVC

  • Kevlar

  • Poly(propene)

Choose your answer

3
1 mark

Polymers can be hydrolysed in acidic or alkaline conditions.

Which row is correct?

 

Molecule

Hydrolysis reaction

Product(s)

A

Polyester

Alkaline

Diacyl chloride and diol

B

Polyalkene

Alkaline

Hydroxycarboxylic acid

C

Polyamide

Acid

Diamine and dicarboxylic acid salt

D

Protein

Acid

Protonated 2-aminocarboxylic acid

    Choose your answer

    4
    1 mark

    Which statement about polymers is correct?

    • Polyesters have higher melting points than polyamides.

    • The monomer hydroxyethanoic acid has a higher melting point than aminoethanoic acid. 

    • Polyamides are suitable to make fibres for sewing but polyalkenes are not. 

    • Polyalkenes form hydroxycarboxylic acids when hydrolysed in HCl.

    Choose your answer

    5
    1 mark

    The following is a section of the primary structure of a protein.

    Gly - Ala - Ser - Leu - Asp

    This section was added to 6 mol dm-3 hydrochloric acid and was heated to 110 oC for 24 hours. 

    How many heterodimeric dipeptides could be formed from the reaction products?

    • 4

    • 10

    • 20

    • 25

    Choose your answer