A catalytic converter is a device which controls the emission of harmful gases from a car.
A catalytic converter is a device present in cars which helps to control the emission of harmful gase from cars.
A catalytic converter works by converting toxic gases and pollutants in exhaust gas produced in internal combustion engine into less-toxic pollutants by catalyzing a redox reaction.
For example, toxic carbon monoxide is oxidized to less harmful carbon dioxide.
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