Essential Chemistry for IGCSE - Air And Water (Section 6 - No. 38)
How does a catalytic converter reduce air pollution?
By converting carbon dioxide into oxygen.
By converting nitrogen oxides and unburnt hydrocarbons into harmless gases.
By removing particulate matter from the exhaust.
By converting oxygen into ozone.
Explanation
The text says that the catalytic converter reduces air pollution by converting nitrogen oxides and unburnt hydrocarbons into less harmful emissions.
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