Question

Octane number is zero for

• A. n-Heptane
• B. Isooctane
• C. n-Hexane
• D. Isoheptane

Answer 1

Answer: (A)

n-Heptane

Answer 2

Octane number is defined as the percentage of isoctane by volume in a mixture of isooctane and $n$-heptane. Octane number of $n$-heptane is zero while octane number of isooctane is $100$.