Chemistry · May / June 2021 · Paper 11 · Question 16

These statements refer to hydrogen and its use as a fuel. 1 Both water and hydrocarbons can be used as a source of hydrogen. 2 In a fuel cell hydrogen reacts with oxygen to generate electricity. 3 The reaction taking place in a fuel cell is a redox reaction. Which statements are correct?

1. A1 and 2 only
2. B1 and 3 only
3. C2 and 3 only
4. D1, 2 and 3

As printed in the paper