Lesson 3.3.5.1

3.3.5.1 Alcohol production Quiz: AQA Chemistry, Unit 3

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

In partnership with Revision Ninja

Lesson 3.3.5.1, Alcohol production: 20 multiple choice questions for the AQA Chemistry (7405), Unit 3: Organic chemistry, written with Revision Ninja.

Host it live on the board and students join with a game code on their own devices, or revise alone with Free Play. The answers are revealed in the game.

Host this setFree Play

The 20 questions

  1. Which reagents are used to produce ethanol industrially from ethene?

    • Steam and acid
    • Hydrogen and acid
    • Oxygen and catalyst
    • Water and alkali

  2. What is the industrial process for producing alcohols from alkenes?

    • Dehydration
    • Hydrolysis
    • Hydrogenation
    • Hydration

  3. What type of mechanism is the hydration of an alkene to an alcohol?

    • Nucleophilic substitution
    • Elimination only
    • Free-radical substitution
    • Electrophilic addition

  4. What particle does the acid catalyst supply during the hydration of ethene?

    • Free radical H•
    • Nucleophilic H-
    • Nucleophilic OH-
    • Electrophilic H+

  5. Which set of conditions is used for the industrial hydration of ethene?

    • Low temperature, alkali
    • High pressure, acid
    • Low pressure, alkali
    • High temperature, yeast

  6. What is the primary organic feedstock used to produce ethanol by fermentation?

    • Ethanol
    • Glucose
    • Ethene
    • Methane

  7. What is the equation for the fermentation of glucose to ethanol?

    • C6H12O6 -> 2C2H5OH + 2CO2
    • C6H12O6 + O2 -> 2C2H5OH + 2CO
    • C6H12O6 -> C2H5OH + CO2
    • C6H12O6 -> 2C2H4 + 2CO2

  8. What is the typical temperature range used in fermentation of glucose?

    • About 150 to 200 C
    • About 25 to 35 C
    • About -20 C
    • About 400 to 500 C

  9. What compound forms if ethanol fermentation occurs in the presence of oxygen?

    • Methanoic acid
    • Diethyl ether
    • Ethanoic acid
    • Carbon monoxide

  10. What defines a biofuel compared to a conventional fossil fuel?

    • Contains no carbon
    • Made from oil
    • Made from biomass
    • Carbon negative

  11. Why is fermentation ethanol classified as a renewable fuel?

    • It produces water
    • Crops regrow rapidly
    • Oil regenerates
    • It emits oxygen

  12. What is the maximum concentration of ethanol that yeast can produce by fermentation, approximately?

    • About 90 percent
    • About 15 percent
    • About 1 percent
    • About 50 percent

  13. Which property difference allows fractional distillation to purify aqueous ethanol after fermentation?

    • Melting point
    • Boiling point
    • Density
    • Solubility

  14. Why is bioethanol not considered strictly carbon neutral?

    • Oxygen content
    • Photosynthesis stops
    • Methane release
    • Fossil fuel transport

  15. Which equation shows the combustion of ethanol, the biofuel?

    • C2H5OH + 2O2 -> C2H4O2 + H2O
    • C2H5OH + 3O2 -> 2CO2 + 3H2O
    • C2H5OH + O2 -> C2H4 + H2O
    • C2H5OH -> 2CO2 + 3H2

  16. What key ethical concern is associated with large-scale biofuel crop production?

    • Ocean eutrophication
    • Food crop competition
    • Ozone depletion
    • Acid rain

  17. What is a major advantage of alkene hydration over yeast fermentation?

    • Lower temperature
    • Slower reaction rate
    • Continuous pure yield
    • Renewable feedstocks

  18. What is the molecular formula of ethanol?

    • C2H6O
    • C2H4O
    • C4H10O
    • C2H5O2

  19. Why must fermentation be carried out at a moderate temperature around 35 °C?

    • Prevents acid formation
    • Increases gas pressure
    • Prevents enzyme denaturation
    • Prevents ethene oxidation

  20. Why does fermentation product require extensive fractional distillation compared to hydration?

    • High water content
    • Solid yeast residues
    • High ethene content
    • High acid content

All AQA Chemistry quizzes