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Chemistry · Oct / Nov 2016 · Paper 11 · Question 33

5070Air quality and climate

The table shows some atmospheric pollutants and their possible effects. Which row is not correct?

  1. ACFCs — cause depletion of the ozone layer
  2. BCO2 — forms photochemical smog
  3. CCO — is poisonous to humans
  4. DNO2 — forms acid rain

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Correct answer: B. CO2 — forms photochemical smog

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