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← ScienceWhich outcome arises when an automotive catalytic converter experiences sulfur poisoning during operation?
A)Increased hydrocarbon emissions in exhaust✓
B)Elevated engine coolant temperature
C)Decreased fuel efficiency at high speeds
D)Premature failure of oxygen sensor
💡 Explanation
When a catalytic converter experiences sulfur poisoning, sulfur compounds preferentially adsorb onto the active catalytic sites preventing oxidation of hydrocarbons and carbon monoxide because the catalytic sites become blocked. Therefore increased hydrocarbon emissions result, rather than cooling issues, fuel efficiency loss or sensor failure, which each involve different thermal or electrical malfunctions.
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