Fuels (antiknock rating): The octane number scale assigns a value of zero to which reference fuel? Recall the two primary standards used to define octane numbers. Choose the correct option.
IIT JEE
Chemistry
Difficulty: Easy
Choose an option
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A2-Methyl octane
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Bn-Heptane
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CIso-octane (2,2,4-trimethylpentane)
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D3-Methyl octane
Answer
Correct Answer: n-Heptane
Explanation
Concept/ApproachOctane number is defined by comparison with a mixture of iso-octane (100) and n-heptane (0). Thus, the zero point corresponds to n-Heptane.