The octane number of a sample of petrol is 40 | vedclass

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Question

(C) The octane number is defined as the percentage by volume of iso-octane in a mixture of iso-octane and $n$-heptane that has the same knocking chara

Vedclass · Accepted Answer

$60\%$ $n$-heptane + $40\%$ iso-octane

Vedclass · Answer

(C) The octane number is defined as the percentage by volume of iso-octane in a mixture of iso-octane and $n$-heptane that has the same knocking characteristics as the fuel being tested.An octane number of $40$ means the mixture contains $40\%$ iso-octane and $(100 - 40) = 60\%$ $n$-heptane.Therefore,the correct option is $C$.

The octane number of a sample of petrol is $40$. It means that its knocking property is equal to the mixture of

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