Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich phenomenon limits the conversion rate in a catalytic converter operating below its light-off temperature?
A)Surface adsorption activation energy✓
B)Catalyst poisoning by sulfur dioxide
C)Insufficient oxygen storage capacity
D)Back pressure from particulate accumulation
💡 Explanation
When a catalytic converter operates below its light-off temperature, the surface adsorption activation energy requirement is not met because insufficient thermal energy is available for the initial chemical reactions. Therefore, the conversion rate is limited, rather than by poisoning, storage, or pressure issues, which manifest under different operational conditions.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Science →- Which risk increases when unshielded americium-241 is stored long-term?
- Which outcome is promoted due to fluid viscosity during extrusion?
- Which reaction occurs when hydrofluoric acid dissolves glass?
- Which mechanism causes suppressed conductivity when dislocations distort a crystal?
- Which consequence results when electron correlation disrupts delocalized pi bonding?
- Which propagation delay occurs when a radio wave encounters significant atmospheric ionization?