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The reaction 2CO + O₂ → 2CO₂ shows carbon monoxide:

The reaction 2CO + O₂ → 2CO₂ shows carbon monoxide:
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  • A Losing oxygen
  • B Gaining oxygen
  • C Changing into acid
  • D Becoming hydrogen
Correct Answer: Option B
Explanation:
Carbon monoxide combines with oxygen to form carbon dioxide. Since oxygen is added, oxidation has occurred.

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