Chemistry · May / June 2026 · Paper 12 · Question 30
Z is a pollutant gas that is formed in car engines. An aqueous solution of Z is acidic. Z is removed from the exhaust gases in a catalytic converter by reduction. What is Z?
- ACO
- BN2
- CH2O
- DNO2
As printed in the paper
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Correct answer: D. NO2
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