(A) Sublimation
(B) Evaporation
(C) Decomposition
(D) None of these
🧠 Explanation:
The splitting of water into hydrogen and oxygen is a decomposition reaction because a single compound (H₂O) breaks down into simpler substances (H₂ and O₂). This happens when energy is applied to break chemical bonds.
Electrolysis vs Decomposition in MCQs:
If the question asks “which process is used?”, the correct answer is Electrolysis, because it is the practical method using electricity.
If the question asks “type of reaction?”, the correct answer is Decomposition, as it is the chemical classification of the process.
