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

Chemistry
WAEC 1985

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
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Correct Answer: Option C
Explanation

 

- 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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