Nitrogen(II) oxide, NO, nitrogen(IV) oxide, NO₂, carbon monoxide, CO, and unburnt hydrocarbons are present in the exhaust gases of internal combustion engines. When catalytic converters are used to remove these compounds from the exhaust gases, redox reactions occur. What happens to each compound in the catalytic converter? NO NO₂ CO hydrocarbons oxidised oxidised reduced oxidised oxidised oxidised oxidised oxidised reduced reduced oxidised oxidised reduced reduced reduced reduced