JEE Main & Advanced Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank Alkane

  • question_answer
    Knocking sound occurs in engine when fuel [CPMT 1981]

    A) Ignites slowly

    B) Ignites rapidly

    C) Contains water

    D) Is mixed with machine oil

    Correct Answer: B

    Solution :

    Knocking - Sudden and irregular burning of the fuel mixture causing jerks against the piston and gives rise to violent sound.  This is known as knocking.


You need to login to perform this action.
You will be redirected in 3 sec spinner