Question : Use of lead- free petrol or diesel is recommended to reduce the pollotanta emitted by automobiles. Whatrole does lead play?

Question : Use of lead- free petrol or diesel is recommended to reduce

1.	Question : Use of lead- free petrol or diesel is recommended to reduce the pollotanta emitted by automobiles. Whatrole does lead play?
Answer» Solution :Catalytic converters , having EXPENSIVE metals namely platinum , palladium and rhodoum as the CATALYSTS are fitted into automobiles for reducing emission of poisonous gases and to convert unburnt hydrocarbons into `CO_(2) and H_(2)O`. MOTOR vehicles equipped with catalytic to converter need to use unleaded petrol because lead in the petrol, inactivates the catalyst and increases the hydrocarbon emission , there by harming the environment.