Which reaction demonstrates oxidation by the addition of oxygen to a non-metal without hydrogen involvement?
In P₄ + 5O₂ → P₄O₁₀, P (0) gains oxygen to become +5 in P₄O₁₀, with no hydrogen present.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Balancing Redox Reactions - Oxidation Number Method and Half Reaction