8th Class Science Combustion and Flame Question Bank Combustion and Flame

  • question_answer 24) What is the disadvantage of incomplete combustion of a fuel?

    A)                          Unburnt carbon gets released.                

    B)                                         Air gets polluted.                

    C)                                         Respiratory problems arise.                

    D)                                         All of the above                

    Correct Answer: D

    Solution :

    Incomplete combustion of a fuel results in the formation of unburnt carbon and some poisonous gases like\['CO'\]and oxides of nitrogen which cause air pollution leading to many respiratory problems.

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