7963. In the fluid catalytic cracker (FCC), the cracking reaction is __________ (i) and the regeneration is ____________ (ii) September 7, 2025 by Admin (i) exothermic (ii) endothermic (i) exothermic (ii) exothermic (i) endothermic (ii) enodthermic (i) endothermic (ii) exothermic ✅ The correct answer is option D.