Hydrogen–oxygen fuel cells: past paper questions

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• Question 13May/June 2026, paper 11Multiple choice1 markHas a diagram

  Fuel cells are used as energy sources in cars. Which row gives a fuel used in a fuel cell and the products formed?

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• Question 11Oct/Nov 2025, paper 11Multiple choice1 mark

  Which equation represents the reaction in a hydrogen–oxygen fuel cell?

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• Question 12Oct/Nov 2024, paper 12Multiple choice1 mark

  Hydrogen–oxygen fuel cells can be used to power cars. Which processes produce the fuel of a hydrogen–oxygen fuel cell?

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• Question 10Oct/Nov 2023, paper 11Multiple choice1 mark

  Which statement about a hydrogen-oxygen fuel cell in a car is correct?

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• Question 12May/June 2026, paper 12Multiple choice1 mark

  Which statement about a fuel cell in a car is correct?

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• Question 13Oct/Nov 2025, paper 13Multiple choice1 mark

  Three statements about a hydrogen–oxygen fuel cell are listed. 1 The overall equation for the reaction is $2{\text{H}}_2+{\text{O}}_2\to 2{\text{H}}_2\text{O}$. 2 The hydrogen required comes from the air.

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• Question 13Oct/Nov 2024, paper 21Multiple choice1 mark

  Which statement describes an advantage of using a hydrogen–oxygen fuel cell in a car compared to a gasoline engine?

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• Question 12Oct/Nov 2023, paper 12Multiple choice1 mark

  Which statements about hydrogen-oxygen fuel cells are correct?

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• Question 13May/June 2026, paper 13Multiple choice1 mark

  Four statements about hydrogen fuel cells are listed. 1 Carbon dioxide and water are produced in the fuel cell. 2 In the fuel cell, hydrogen combines with oxygen.

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• Question 12Oct/Nov 2025, paper 22Multiple choice1 mark

  Hydrogen–oxygen fuel cells are used in electric cars. Three statements about these fuel cells are listed. 1 The process in the cell is called electrolysis.

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• Question 13Oct/Nov 2024, paper 23Multiple choice1 mark

  Which statement about a hydrogen–oxygen fuel cell is not correct?

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• Question 14May/June 2026, paper 21Multiple choice1 mark

  Which statement about hydrogen fuel cells is correct?

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• Question 15Oct/Nov 2025, paper 23Multiple choice1 markHas a diagram

  In a fuel cell, a fuel is oxidised to produce electricity. Which row describes the fuel and the oxidising agent used?

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• Question 5Oct/Nov 2024, paper 41Structured17 marks

  Hydrogen is the first element of the Periodic Table. Hydrogen is used in fuel cells to produce electricity in vehicles. Name the substance which combines with hydrogen in a fuel cell.

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• Question 8Oct/Nov 2023, paper 21Multiple choice1 markHas a diagram

  Which statements about hydrogen and oxygen are correct?

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• Question 1Oct/Nov 2025, paper 33Structured4 marksHas a diagram

  Fig. 1.1 shows part of the Periodic Table. Fig. 1.1 Answer the following questions using only the symbols of the elements in Fig. 1.1. Each symbol may be used once, more than once or not at all.

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• Question 11May/June 2024, paper 11Multiple choice1 markHas a diagram

  Which statements about a hydrogen–oxygen fuel cell are correct?

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• Question 1Oct/Nov 2023, paper 33Structured6 marks

  A list of substances is shown. ammonia calcium oxide carbon monoxide cobalt(II) chloride ethane ethanol ethene oxygen potassium oxide sodium sulfate sulfuric acid water Answer the following questions using only the substances from the list.

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• Question 14May/June 2024, paper 12Multiple choice1 markHas a diagram

  Hydrogen–oxygen fuel cells can be used to power vehicles. What is produced by the fuel cells?

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• Question 13May/June 2025, paper 12Multiple choice1 mark

  Which equation represents the overall reaction that produces electricity in a hydrogen–oxygen fuel cell?

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• Question 13May/June 2024, paper 13Multiple choice1 mark

  Which equation represents the overall reaction in a hydrogen–oxygen fuel cell?

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• Question 10May/June 2023, paper 12Multiple choice1 mark

  Four statements about hydrogen fuel cells are listed. 1 The fuel cell converts chemical energy into electrical energy. 2 In the fuel cell, hydrogen combines with oxygen.

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• Question 12May/June 2025, paper 13Multiple choice1 mark

  What is produced in a hydrogen–oxygen fuel cell?

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• Question 11May/June 2024, paper 23Multiple choice1 mark

  Hydrogen–oxygen fuel cells and gasoline are each used to power cars. Which statement describes an advantage of using hydrogen–oxygen fuel cells in cars in comparison with gasoline engines?

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• Question 10May/June 2023, paper 13Multiple choice1 markHas a diagram

  The flow diagram represents a hydrogen–oxygen fuel cell. Which row shows the inputs and outputs?

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• Question 10May/June 2023, paper 21Multiple choice1 mark

  Which statements about hydrogen fuel cells are correct?

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• Question 12May/June 2025, paper 22Multiple choice1 mark

  Hydrogen–oxygen fuel cells can be used to power vehicles. Which statement about hydrogen–oxygen fuel cells is correct?

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• Question 5May/June 2023, paper 41Structured16 marks

  This question is about electricity and chemical reactions. The electrolysis of concentrated aqueous potassium bromide using graphite electrodes forms: ● hydrogen at the cathode ● bromine at the anode. The electrolyte becomes aqueous potassium hydroxide.

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• Question 5May/June 2023, paper 43Structured16 marks

  This question is about electricity and chemical reactions. Aqueous copper(II) sulfate is an electrolyte. The electrolysis of aqueous copper(II) sulfate using inert electrodes forms: • copper at the cathode • oxygen at the anode.

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