A sample of air that has been passed through caustic potash will

  • A contain more oxygen than nitrogen
  • B rekindle a glowing splint
  • C have no action on lime water
  • D contain no water vapour
  • E be free of noble gases
waec 1985chemistry

The correct answer is C. have no action on lime water

- Potassium hydroxide also absorbs carbon dioxide from the air.

-  If carbon dioxide is bubbled through limewater, the limewater turns milky or cloudy white.

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