What happens when noble metals like platinum and palladium are used as a catalyst in catalytic converters?

They are used to decrease lead content in gasoline

They convert the hydrocarbon content into CO2 and H2O

They prone to poisoning by lead

They are used to decrease lead content in gasoline

What happens when noble metals like platinum and palladium are used as

1.	What happens when noble metals like platinum and palladium are used as a catalyst in catalytic converters?
A.	They convert the hydrocarbon content into CO<sub>2</sub> and H<sub>2</sub>O
B.	They reduce NO<sub>x</sub> emissions
C.	They prone to poisoning by lead
D.	They are used to decrease lead content in gasoline
Answer» D. They are used to decrease lead content in gasoline