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Which consequence results when a catalytic convertor is fouled by lead?

A)Reduced reaction rate of pollutants
B)Increased exhaust back pressure
C)Elevated engine operating temperature
D)Decreased fuel consumption efficiency

💡 Explanation

The catalyst is poisoned, reducing the rate of the catalytic oxidation and reduction involving platinum, palladium and rhodium. This is because lead blocks active sites, therefore conversion efficiency drops, rather than causing mechanical or thermal failure.

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