The compound that has the least value for octane number is :

The compound that has the least value for octane number is : Correct Answer N-heptane

Octane rating or octane number is a standard measure of the performance of a motor or aviation fuel. The higher the octane number, the more compression the fuel can withstand. Isooctane (upper) has an octane rating of 100 whereas n-heptane has an octane rating of 0.
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