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Q. It is dangerous to have coal or charcoal burning in a closed room because

  • (A) burning consumes all the oxygen and breathing becomes difficult
  • (B) the amount of heat produces is intolerable
  • (C) there is serious risk of fire
  • (D) it produces the poisonous gas carbon monoxide
  • Correct Answer - Option(D)
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  • Filed under category Chemistry
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