The octane number of zero is assigned to

A. 2-methyl octane

B. n-heptane

C. iso-octane

D. 3-methyl octane

Answer: Option B

Solution(By Examveda Team)

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.