alleryCars with catalytic converters must use unleaded petrol because lead:
AInactivates the catalyst
BBlocks the exhaust pipe
CCools the engine down
DDilutes the petrol fuel
Answer & Solution
Correct answer: A. Inactivates the catalyst
1. The converter relies on platinum, palladium and rhodium.
2. Lead poisons these catalysts.
3. So leaded petrol would inactivate the converter.
_Source: syllabus Biology, Chapter 16, Environmental Issues._
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