Chemistry · May / June 2020 · Paper 11 · Question 31
Which row correctly compares carbon dioxide and methane?
- Aboth contain carbon: ✓; both are described as a greenhouse gas: ✗; both lower the pH of water when they dissolve in it: ✓
- Bboth contain carbon: ✓; both are described as a greenhouse gas: ✓; both lower the pH of water when they dissolve in it: ✗
- Cboth contain carbon: ✗; both are described as a greenhouse gas: ✓; both lower the pH of water when they dissolve in it: ✓
- Dboth contain carbon: ✗; both are described as a greenhouse gas: ✓; 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 described as a greenhouse gas: ✓; both lower the pH of water when they dissolve in it: ✗
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