Which reaction shows oxidation by the removal of hydrogen without oxygen involvement?
In 2HI + Cl₂ → 2HCl + I₂, I (-1) loses H and electrons to become 0 in I₂, with no oxygen present.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Balancing Redox Reactions - Oxidation Number Method and Half Reaction