GATE Chemical 2025 | Question: 18

Question

​​​​​In the CONTACT PROCESS for manufacturing sulphuric acid, the reaction converting $\mathrm{SO}_{2}$ to $\mathrm{SO}_{3}$ is

• A. Exothermic and reversible
• B. Endothermic and reversible
• C. Exothermic and irreversible
• D. Endothermic and irreversible