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JAMB Chemistry 1990 Question 36

Question 36

Carbon and its Compounds

Coal fire should not be used in poorly ventilated rooms because

  1. A.of the accumulation of CO2 which causes deep sleep
  2. B.it is usually too hot
  3. C.of the accumulation of CO which causes suffocation
  4. D.it removes most of the gases in the rooms.
Show the answer and explanation

Answer: C (of the accumulation of CO which causes suffocation)

Explanation

With little air, coal burns incompletely to carbon(II) oxide, CO. CO binds to haemoglobin and stops the blood carrying oxygen, causing suffocation.