Question

Which of the following is a measurement method for octane number?

• A. Research octane number (RON)
• B. Motor octane number (MON)
• C. Anti-knock index (AKI)
• D. All of the above

Answer 1

The correct option is D All of the above

Octane number can be determined by all the three methods. The most common method used for the measurement is RON. RON is determined by running the fuel in a test engine and comparing the results with those for mixtures of iso-octane and $n$-heptane.