Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich risk increases when a platinum catalytic converter cools rapidly?
A)Reduced catalytic activity temporarily occurs✓
B)Platinum oxidation increases permanently thereafter
C)Increased CO emissions are immediately released
D)Converter housing undergoes immediate thermal shock
💡 Explanation
Reduced catalytic activity occurs because rapid cooling decreases surface energy, inhibiting reactant adsorption. This inhibition is due to decreased thermal energy available for overcoming the activation energy barrier, therefore platinum's catalytic function is reduced rather than enhanced by other reactions.
🏆 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 outcome occurs when humidity acutely increases around operating Peltier-driven equipment?
- Which outcome results when coating thickness improperly influences multiple reflections?
- Which outcome is observed when adiabatic expansion causes quenching?
- Which risk increases when an aircraft wing's boundary layer transitions beyond laminar flow?
- Which outcome results when anisotropic crystal growth occurs during directional solidification?
- Which outcome results when a pulsed laser drills materials?
