A hydrogen fuel cell and a rechargeable battery are compared for use in a mobile phone. Which statement is a disadvantage of using a hydrogen fuel cell in a mobile phone?
The fuel cell would have to be taken out of use while it was recharged
The fuel cell would stop working once one of its reactants was used up
The fuel cell would need a store of hydrogen to be refilled by the user
The fuel cell would produce a voltage that fell steadily as it was used
40 exam-style questions on AQA GCSE Chemistry 5.2 Chemical cells and fuel cells, covering 5.2.1 Cells and batteries, 5.2.2a Fuel cells, and 5.2.2b Half equations for hydrogen fuel cells. Each one has a worked solution and a mark scheme showing where the marks go.