Catalytic converters in cars use which expensive metals as catalysts?

Question

Accepted Answer

B. Platinum, palladium, rhodium

1. Unburnt hydrocarbons become carbon dioxide and water.
2. Platinum-palladium and rhodium are the catalysts.
3. Carbon monoxide is changed to carbon dioxide.
_Source: syllabus Biology, Chapter 16, Environmental Issues._

Answer

Zinc, tin and aluminium

Answer

Gold, silver and copper

Answer

Iron, nickel and cobalt

Catalytic converters in cars use which expensive metals as catalysts?

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