Chemistry · May / June 2025 · Paper 11 · Question 31

Three statements about global warming and greenhouse gases are listed. 1 Global warming is occurring because more of the Earth's thermal energy is released to space. 2 Greenhouse gases both absorb and emit thermal energy. 3 Greenhouse gas levels in the atmosphere may be reduced by replacing fossil fuels with hydrogen. Which statements are correct?

1. A1, 2 and 3
2. B1 and 2 only
3. C1 and 3 only
4. D2 and 3 only

As printed in the paper