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

  • question_answer
    The given table lists some fuels with their calorific values:
    Fuel Calorific Value
    Diesel               45000               
    LPG                 55000                
    Petrol 45000
    Which of the given fuels is the most efficient?

    A)  Petrol                  

    B)  Diesel

    C)  LPG           

    D)  CNG

    Correct Answer: C

    Solution :

      Calorific value is the amount of heat produced on complete combustion of one kg of fuel. The higher the value, the greater is the efficiency of the fuel. Among the given fuels, LPG has a maximum calorific value. Hence, it is the most efficient. The correct answer is C.                            


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