Question Detail
Question
In any fuel, the percentage by volume of isooctane in a mixture of isooctane and n-heptane which will knock under same conditions as the fuel being tested, is called :
Correct Answer
Option D is the correct answer.
Detailed Explanation
The octane number is defined as the percentage by volume of isooctane (2,2,4-trimethylpentane) in a mixture with n-heptane that has the same knocking characteristics as the fuel being tested.
Hint
What is the definition of octane number?