Q. Catalytic converters I. These are fitted into automobiles for reducing emission of poisonous gases like $NO_{2}$ and CO II. They have expensive metals like platinum, palladium and rhodium as catalysts III. As the exhaust emission passes through catalytic converter nitric oxide splits into nitrogen and oxygen: carbon monoxide is oxidized to carbon dioxide and unburnt hydrocarbons get burnt completely into $CO_{2}$ and $H_{2}O$ IV. Motor vehicles fitted with catalytic converter should use unleaded petrol because lead in the petrol inactivates the catalyst Which of the statements given above are correct about catalytic converters?
A) I, II and III
B) II, III and IV
C) I, III and IV
D) I, II, III and IV
Explanation
Catalytic converters are fitted into automobiles for reducing emission of poisonous gases like $NO_{2}$ and CO. Catalytic converters have costly metals like platinum, palladium and rhodium as catalysts. Exhaust gases first pass through catalytic converter Hydrocarbons which have been left unburnt are oxidised to produce carbon dioxide and water. Carbon monoxide is also oxidised to form carbon dioxide. However, nitrogen oxide splits up to form nitrogen gas. Auto mobiles fitted with catalytic converter should not use leaded petrol because lead inactivates the catalyst of the converter
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.