Which of the following compounds determines the octane rating of petrol?

A. 1,2,3 – trimethyl pentane
B. 2,3,5 – trimethyl octane
C. 2,3,5 – trimethyl pentane
D. 2,2,4 – trimethyl pentane

Correct Answer: Option D

D. 2,2,4 – trimethyl pentane