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

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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