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Which outcome can block catalytic converters on vehicles?

A)Sulfur poisoning deactivates surface sites
B)Thermal runaway increases activity
C)Increased conversion rates yield efficiency
D)Rare earth elements enhance selectivity

💡 Explanation

Sulfur poisons catalytic converters, because sulfur adheres to active sites preventing substrate binding via competitive adsorption, reducing catalytic capacity, therefore the converter's efficiency decays rather than improving, and thermal damage would affect the entire matrix.

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