Quiz  /  Fuel Cell Class 10 MCQ Questions With Answers

  • 1. 
    What is a disadvantage of using solar photovoltaic cells to provide electricity in a spacecraft?

  • Photovoltaic cells have lots of moving parts
  • Photovoltaic cells release toxic byproducts
  • Photovoltaic cells only work when the spacecraft is in direct sunlight

  • 2. 
    What is an electrolyte?

  • An electric current
  • The splitting of ionic compounds
  • A solution containing ions which allows current to flow.
  • The salts in drinking water.

  • 3. 
    What is a battery?

  • A single cell
  • Two or more cells connected in series
  • AA or AAA
  • An alkaline substance

  • 4. 
    What are the products in a hydrogen fuel cell?

  • Water
  • Oxygen
  • Hydrogen

  • 5. 
    What is the main reason why hydrogen is more difficult to store than diesel?

  • Hydrogen is a gas at room temperature but diesel is a liquid
  • Hydrogen can be liquefied by cooling it
  • Hydrogen can be stored under pressure

  • 6. 
    State three disadvantages of hydrogen fuel cells

  • Do not need to be recharged, no pollutants are produced, can be different sizes for different uses
  • Hydrogen is highly flammable, hydrogen is sometimes produced through non-renewable means, hydrogen is difficult to store

  • 7. 
    What does the potential difference of a cell depend on?

  • The anode and cathode.
  • The type of electrolyte and fuel
  • Whether it's alkali or not
  • The type of electrode and the electrolyte.

  • 8. 
    What happens to hydrogen molecules in a hydrogen-oxygen fuel cell?

  • They form hydrogen ions, H+ , and electrons, e-
  • They form hydrogen ions, H+ , and electrons, e+
  • They form hydrogen atoms, H

  • 9. 
    What is produced by a hydrogen-oxygen fuel cell?

  • Water and Carbon Dioxide
  • Carbon Dioxide
  • Water

  • 10. 
    State three advantages of hydrogen fuel cells

  • Do not need to be recharged, no pollutants are produced, can be different sizes for different uses
  • Hydrogen is highly flammable, hydrogen is sometimes produced through non-renewable means, hydrogen is difficult to store

  • 11. 
    What is the fuel for a fuel cell?

  • Oxygen
  • Hydrogen-rich Fuels
  • Ozone
  • Water

  • 12. 
    How does the reactivity of the metal electrodes affect the size of the potential difference?

  • The lower the difference in reactivity, the greater the potential difference.
  • The greater the difference in reactivity, the lower the potential difference.
  • The greater the difference in reactivity, the greater the potential difference.
  • The lower the difference in reactivity, the lower the potential difference.

  • 13. 
    Complete the equation which occurs at the positive electrode of a hydrogen fuel cell O₂ + 2H₂O →

  • OH⁻
  • 2OH⁻
  • 3OH⁻
  • 4OH⁻

  • 14. 
    Why can some cells not be recharged?

  • Because the reaction is not reversible
  • Because the reaction is reversible
  • Because the reactant is used up
  • Because the products are used up

  • 15. 
    What happens to oxygen molecules in a hydrogen-oxygen fuel cell?

  • They react with electrons to form oxide ions, O2-
  • They react with hydrogen ions to form hydroxide ions, OH-
  • They react with hydrogen ions and electrons to form water

  • 16. 
    Fuel cells produce

  • Fossil Fuels
  • Hydrogen gas
  • Electricity
  • Gasoline

  • 17. 
    In non-rechargeable cells, why do the chemical reactions stop over time?

  • One of the reactants becomes used up.
  • The energy has depleted.
  • The products are oxidised.
  • The electrodes become reactive.

  • 18. 
    Which of these is a disadvantage of cars driven by hydrogen-oxygen fuel cells rather than by petrol engines?

  • They have fewer moving parts
  • There are fewer suitable filling stations
  • They emit little pollution

  • 19. 
    What type of reaction takes place in a chemical cell

  • Exothermic
  • Endothermic
  • No reaction occurs

  • 20. 
    In a hydrogen fuel cell used to power a car, where does the oxygen come from?

  • The air
  • A catalyst
  • The fuel

  • 21. 
    Complete the equation which occurs at the negative electrode of a hydrogen fuel cell 2H₂ + 4OH⁻ →

  • H₂O + 4e⁻
  • 4H₂O + e⁻
  • 4H₂O + 4e⁻
  • 3H₂O + 2e⁻

  • 22. 
    What are the main components of a chemical cell?

  • An anode, a cathode
  • An anode, a cathode and an electrolyte
  • An anode and an electrolyte
  • A cathode and an electrolyte

  • 23. 
    What is a fuel cell?

  • A cell which uses hydrogen to generate electricity.
  • A cell which uses oxygen (or air) to generate electricity.
  • A cell which uses a fuel to generate electricity.
  • A cell which uses a fuel and oxygen (or air) to generate electricity.

  • 24. 
    Why does the voltage from a chemical cell that is connected in a circuit with a lamp eventually reach zero?

  • The lamp breaks
  • One of the reactants is used up
  • The circuit becomes broken

  • 25. 
    What is a strength of using hydrogen-oxygen fuel cells in manned spacecraft, compared to using chemical cells?

  • They produce electricity
  • They produce water that the astronauts can drink
  • They produce a voltage
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