CDS II 2018 GK Q27

1. In which one of the following reactions, the maximum quantity of H₂ gas is produced by the decomposition of 1 g of compound by H₂O/O₂? (a) CH₄ + H₂O → CO + 3H₂ (b) CO + H₂O → CO₂ + H₂ (c) CH₄ + 1/2 O₂ → CO + 2H₂ (d) C₁₂H₂₄ + 6O₂ → 12CO + 12H₂