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  1. Which of the following is used to increase the anti-knocking property of petrol ?

  2. A.

     Tetramethyl lead

    B.

     Tetraethyl lead

    C.

     Trimethyl lead

    D.

     Triethyl lead

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    Answer : Option B

    Explanation :

    An anti-knocking agent is the substance which is used to reduce the engine knocking. It increases the octane number of the fuel. It helps in auto-ignition by raising the temperature and pressure. TEL is tetraethyl Lead which is used as an anti-knocking compound.


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