Question

The expensive metals used in catalytic converters of automobiles are.

• A. Cadmium and Rhodium
• B. Platinum, Palladium and Rhodium
• C. Lead and Cadmium
• D. Copper and Cadmium
• E. Lead and Mercury

Answer 1

Answer: (B)

Platinum, Palladium and Rhodium

Catalytic converter is a device in automobiles that controls the exhaust emission. It has some expensive metals which acts as a catalyst on pollutants such as platinum, palladium and rhodium. These catalysts converts harmful nitrogen oxides into nitrogen gas and carbon monoxide into carbon dioxide. Thus, the correct answer is 'Platinum, Palladium and Rhodium'.