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  3. 8th Class
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  5. Combustion and Flame

8th Class Science Combustion and Flame Question Bank Combustion and Flame Conceptive Objective Problems

  • question_answer
    Which of the following substances can be used to extinguish a fire in an oil well?

    A)  Water                 

    B)  Sand

    C)  Carbon dioxide               

    D)  Sodium bicarbonate solution

    Correct Answer: C

    Solution :

      Carbon dioxide is non-combustible gas and is heavier than air. It cuts off the supply of oxygen by covering the burning substance such as a blanket. The correct answer is C.


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