When air is passed through potash and then pyrogallol, the components are noble gases,

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Chemistry WAEC 1992

When air is passed through potash and then pyrogallol, the components are noble gases,

  • oxygen and carbon (IV) oxide
  • oxygen and nitrogen
  • nitrogen and water vapour checkmark
  • water vapour and carbon (IV) oxide
  • oxygen and water vapour

The correct answer is: C

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