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In the equation 2H₂ + O₂ → 2H₂O, oxygen acts as:

In the equation 2H₂ + O₂ → 2H₂O, oxygen acts as:
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A Precipitate
  • B Reactant
  • C Catalyst
  • D Product
Correct Answer: Option B
Explanation:
Oxygen is one of the starting substances in the reaction, so it is a reactant. Reactants are always written before the arrow.

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