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When Magnesium reacts with oxygen, heat is

When Magnesium reacts with oxygen, heat is
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A Absorbed and the reaction is endothermic
  • B Evolved and the reaction is endothermic
  • C Evolved and the reaction is exothermic
  • D Absorbed and the reaction is exothermic
Correct Answer: Option C
Explanation:
The Magnesium actually reacts with oxygen in the air, is burnt and produces a bright light. The bright light emits a lot of heat so the reaction is exothermic.

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