Alcohols (Cambridge O Level Chemistry)

Exam Questions

3 hours16 questions
11 mark

Which of the following statements about ethanol is not correct?

  • It is formed by a reaction between steam and ethane.

  • It can be used as a fuel.

  • It can be used as a solvent.

  • Its functional group is -OH.

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21 mark

Ethanol is used as a solvent and fuel, it is produced by the ….1….. of ….2…. .

Which words would correctly complete the gaps 1 and 2?

  1 2
A combustion ethane
B combustion glucose
C fermentation glucose
D fermentation ethane

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    11 mark

    Ethanol can be produced from substance Y.

    substance Y + steam rightwards arrow with catalyst on top ethanol

    What is substance Y?

    • Ethane

    • Ethene

    • Carbon dioxide

    • Hydrogen

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    21 mark

    Which statements about alcohols are correct?

    1 All alcohols contain the hydroxide ion, OH–.
    2

    Ethanol can be formed from ethene using a reaction catalysed by yeast.

    3 Methanol can be oxidised to methanoic acid.
    4

    The alcohols X and Y shown are isomers.

    q37-cie-o-level-chemistry-june-2021-paper-1

    • 1 and 2 

    • 1 and 3 

    • 2 and 4 

    • 3 and 4

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    11 mark

    Which of these is an advantage of producing ethanol by fermentation of sugar compared to the catalytic addition of steam to ethene?

    • The process uses high temperatures.

    • The alcohol produced is purer.

    • The process is faster.

    • The process uses renewable raw materials.

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