Chemistry · May / June 2026 · Paper 11 · Question 30
Which row about carbon dioxide and methane is correct?
- Aboth contain carbon ✓, both are greenhouse gases ✗, both lower the pH of water when they dissolve in it ✓
- Bboth contain carbon ✓, both are greenhouse gases ✓, both lower the pH of water when they dissolve in it ✗
- Cboth contain carbon ✗, both are greenhouse gases ✓, both lower the pH of water when they dissolve in it ✓
- Dboth contain carbon ✗, both are greenhouse gases ✓, both lower the pH of water when they dissolve in it ✗
As printed in the paper
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Correct answer: B. both contain carbon ✓, both are greenhouse gases ✓, both lower the pH of water when they dissolve in it ✗
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