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

  • question_answer
    The given table lists the ignition temperatures of four fuels W, X, Y, and Z respectively.
    Fuel  Ignition Temperature
    W \[{{38}^{o}}C\]
    X \[{{42}^{o}}C\]
    Y \[{{53}^{o}}C\]
    At \[{{50}^{o}}C\], which of the given fuels is likely to undergo combustion?

    A)  Y and Z    

    B)  X and Y

    C)  Wand X              

    D)  Z and W

    Correct Answer: A

    Solution :

      The ignition temperature of a substance is the lowest temperature at which that substance starts burning. Both fuels, W and\[X,\]have their ignition temperatures below\[{{50}^{o}}C\]. Hence, they will attain their ignition temperatures and undergo combustion. The correct answer is C.          


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