O LevelChemistryCambridge (CIE)Exam Questions11. Organic Chemistry11.2 Naming Organic Compounds

Naming Organic Compounds (Cambridge (CIE) O Level Chemistry): Multiple Choice Questions

Exam code: 5070

2 hours31 questions

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11.2 Naming Organic Compounds

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Hard
1
1 mark

The names of four organic compounds are shown.

Which compound is an alcohol?

  • butan-1-ol

  • butane

  • but-2-ene

  • butanoic acid

Choose your answer

2
1 mark

The molecular formulae of four organic compounds are shown.

Which compound is an alkene?

  • C4H10

  • C3H7COOH

  • C4H8

  • C4H9OH

Choose your answer

3
1 mark

The structural formulae of four organic compounds are shown.

Which compound is a carboxylic acid?

  • CH3CH2CH2OH

  • CH3CH2CH3

  • CH3CH=CH2

  • CH3CH2COOH

Choose your answer

4
1 mark

A compound is named methyl propanoate.

What type of compound is it?

  • an alcohol

  • a carboxylic acid

  • an ester

  • an alkene

Choose your answer

5
1 mark

The displayed formula of an organic compound is shown.

Two-carbon chain. The first carbon is bonded to three H. The second carbon is double bonded to an O above it and single bonded to an O to its right, which is bonded to an H.

What is the name of this compound?

  • ethanoic acid

  • methanol

  • methanoic acid

  • ethane

Choose your answer

1
1 mark

Which one of the following structures is correctly named?

lKKAS8oy_q1-medium-mcq-11-1-organic-chemistry-cie-igcse-chemistry

    Choose your answer

    2
    1 mark

    Organic compounds can have names that have the suffixes of -ane, -ene, -ol or -oic acid.

    How many of these have at least one double bond in their structure?

    • 1

    • 2

    • 3

    • 4

    Choose your answer

    3
    1 mark

    An ester has the formula C2H5COOC2H5.

    Which pair of compounds would react together to form this ester?

    • ethanoic acid and ethanol

    • ethanol and propanoic acid

    • propanoic acid and propanol

    • propanol and ethanoic acid

    Choose your answer

    4
    1 mark

    The diagrams show the structures of five hydrocarbons.

    q32-cie-o-level-chemistry-specimen-2023-paper-1

    Which three hydrocarbons are isomers of each other?

    • 1, 2 and 4

    • 2, 3 and 5

    • 2, 3 and 4

    • 3, 4 and 5

    Choose your answer

    5
    1 mark

    A carboxylic acid with molecular formula C4H8O2 reacts with an alcohol with molecular formula C3H8O to form an ester.

    What is the formula of the ester formed?

    q36-cie-o-level-chemistry-specimen-2023-paper-1

      Choose your answer

      6
      1 mark

      Which structural formula represents but-2-ene?

      • CH2=CHCH2CH3

      • CH3CH2CH2CH3

      • CH3CH=CHCH3

      • CH3CH=CHCH2CH3

      Choose your answer

      1
      1 mark

      The diagram below shows some simple hydrocarbons and the products of two reactions.

      11-1-4h-hydrocarbons-and-products

      Which of these structures are named correctly?

       

       Structure 1

      Structure 2

      Structure 3

      A

      x

      ✔

      ✔

      B

      ✔

      ✔

      ✔

      C

      x

      ✔

      x

      D

      ✔

      x

      ✔

        Choose your answer

        2
        1 mark

        The diagram below shows a reaction scheme. What are the names of all of the compounds?

        11-1-5h-reaction-scheme-a

         

        P

        Q

        R

        S

        A

        ethene

        ethane

        ethanoic acid

        ethanol

        B

        ethane

        ethene

        ethanol

        ethanoic acid

        C

        ethene

        ethane

        ethanol

        ethanoic acid

        D

        ethane

        ethene

        ethanoic acid

        ethanol

          Choose your answer

          3
          1 mark

          The structural formula of an ester is shown.

          CH3CH2CH2COOCH3

          What is the name of this ester?

          • methyl propanoate

          • propyl methanoate

          • butyl methanoate

          • methyl butanoate

          Choose your answer

          4
          1 mark

          An ester is named propyl methanoate.

          Which structural formula represents this ester?

          • CH3COOCH2CH2CH3

          • CH3CH2COOCH3

          • HCOOCH2CH2CH3

          • HCOOCH2CH3

          Choose your answer

          5
          1 mark

          A student draws four structures for propanoic acid.

          Which structure is a correctly drawn displayed formula?

          • Three-carbon chain. The first carbon is bonded to three H and the second to two H. The third carbon is double bonded to an O above it and single bonded to an O to its right, which is bonded to an H.
          • Three-carbon chain. The first carbon is bonded to three H and the second to two H. The third carbon is double bonded to an O above it and single bonded to the letters OH written together as one group.
          • The letters C2H5 bonded to a carbon. That carbon is double bonded to an O above it and single bonded to an O to its right, which is bonded to an H.
          • Three-carbon chain. The first carbon is bonded to three H. The second carbon is bonded to one H above and one H below, and that lower H is bonded to a further H. The third carbon is double bonded to an O above it and single bonded to an O to its right, which is bonded to an H.

          Choose your answer