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  1. The octane number of zero is assigned to

    2. A.

     2-methyl octane
    B.

     n-heptane
    C.

     iso-octane
    D.

     3-methyl octane

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    Answer : Option B

    Explanation :

    n-heptane is defined as the zero point of the octane rating scale. 2,2,4-Trimethylpentane has an octane rating of 100, whereas n-heptane has an octane rating of 0. The octane number is based on an arbitrary scale which is a measure of its ability to resist knocking, as it burns on combustion.

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