Chemistry · May / June 2019 · Paper 11 · Question 31
Some atmospheric pollutants are listed. 1 sulfur dioxide 2 methane 3 nitrogen dioxide 4 unburned hydrocarbons Which substances could be removed by reacting with calcium carbonate?
- A1 and 2
- B1 and 3
- C2 and 4
- D3 and 4
As printed in the paper
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Correct answer: B. 1 and 3
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