2451. Iso-octane is used as a reference substance in the definition of octane number and it is assigned an octane number value of 100. Iso-octance is chemically known as September 7, 2025 by Admin α-methyl naphthalene. 2-2-4 tri methyl pentane. 1, 3 butadiene. tetra methyl ethylene. ✅ The correct answer is option B.
