Which of the following is NOT a recognized industrial or commercial application of dihydrogen gas? — Hydrogen Chemistry Question

💡 Solution & Explanation

Dihydrogen is used in fuel cells, Haber's process, and oil hydrogenation. However, it cannot reduce highly electropositive alkali metal oxides (like $Na_2O$ or $K_2O$) back to their metallic state due to the strong affinity of alkali metals for oxygen.